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2742407771620 = 2251131140081961
BaseRepresentation
bin100111111010000100001…
…111011011010111100100
3100201011122010001020221011
4213322010033123113210
5324412422342142440
65455502244032004
7402063264304516
oct47720417332744
910634563036834
102742407771620
11968059768a20
123835b6992604
1316b7b98609aa
1496a3a045bb6
154b50a12a9ea
hex27e843db5e4

2742407771620 has 48 divisors (see below), whose sum is σ = 6302808360576. Its totient is φ = 994032608000.

The previous prime is 2742407771617. The next prime is 2742407771657. The reversal of 2742407771620 is 261777042472.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19972561 + ... + 20109400.

It is an arithmetic number, because the mean of its divisors is an integer number (131308507512).

Almost surely, 22742407771620 is an apocalyptic number.

2742407771620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2742407771620 is an abundant number, since it is smaller than the sum of its proper divisors (3560400588956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2742407771620 is a wasteful number, since it uses less digits than its factorization.

2742407771620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40082292 (or 40082290 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 49.

The spelling of 2742407771620 in words is "two trillion, seven hundred forty-two billion, four hundred seven million, seven hundred seventy-one thousand, six hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 311 622 1244 1555 3110 3421 6220 6842 13684 17105 34210 68420 40081961 80163922 160327844 200409805 400819610 440901571 801639220 881803142 1763606284 2204507855 4409015710 8818031420 12465489871 24930979742 49861959484 62327449355 124654898710 137120388581 249309797420 274240777162 548481554324 685601942905 1371203885810 2742407771620