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13812772450 = 252276255449
BaseRepresentation
bin11001101110100111…
…00010111001100010
31022122122011112122211
430313103202321202
5211242032204300
610202343352334
7666202425421
oct146723427142
938578145584
1013812772450
115948a4a424
122815a526aa
1313c18a7349
1495069b2b8
1555c99d4ba
hex3374e2e62

13812772450 has 12 divisors (see below), whose sum is σ = 25691756850. Its totient is φ = 5525108960.

The previous prime is 13812772439. The next prime is 13812772469. The reversal of 13812772450 is 5427721831.

It can be written as a sum of positive squares in 3 ways, for example, as 12395927569 + 1416844881 = 111337^2 + 37641^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138127675 + ... + 138127774.

Almost surely, 213812772450 is an apocalyptic number.

13812772450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13812772450 is a deficient number, since it is larger than the sum of its proper divisors (11878984400).

13812772450 is a wasteful number, since it uses less digits than its factorization.

13812772450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276255461 (or 276255456 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 13812772450 in words is "thirteen billion, eight hundred twelve million, seven hundred seventy-two thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 276255449 552510898 1381277245 2762554490 6906386225 13812772450