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49917370881 = 378328638767
BaseRepresentation
bin101110011111010011…
…101010001000000001
311202211211100011210010
4232133103222020001
51304212321332011
634533130255133
73414666436350
oct563723521001
9152754304703
1049917370881
111a196066624
1298112874a9
1349268cba61
1425b7781997
1514724c21a6
hexb9f4ea201

49917370881 has 16 divisors (see below), whose sum is σ = 76981008384. Its totient is φ = 28180545744.

The previous prime is 49917370871. The next prime is 49917370927. The reversal of 49917370881 is 18807371994.

It is not a de Polignac number, because 49917370881 - 25 = 49917370849 is a prime.

It is a super-2 number, since 2×499173708812 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49917370871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14317641 + ... + 14321126.

It is an arithmetic number, because the mean of its divisors is an integer number (4811313024).

Almost surely, 249917370881 is an apocalyptic number.

It is an amenable number.

49917370881 is a deficient number, since it is larger than the sum of its proper divisors (27063637503).

49917370881 is a wasteful number, since it uses less digits than its factorization.

49917370881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28638860.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 49917370881 in words is "forty-nine billion, nine hundred seventeen million, three hundred seventy thousand, eight hundred eighty-one".

Divisors: 1 3 7 21 83 249 581 1743 28638767 85916301 200471369 601414107 2377017661 7131052983 16639123627 49917370881