11911396256 has 36 divisors (see below), whose sum is σ = 24911169318. Its totient is φ = 5605358592.

The previous prime is 11911396243. The next prime is 11911396283. The reversal of 11911396256 is 65269311911.

It can be written as a sum of positive squares in 3 ways, for example, as 11381475856 + 529920400 = 106684^2 + 23020^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 634751 + ... + 653246.

Almost surely, 2^11911396256 is an apocalyptic number.

11911396256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11911396256 is an abundant number, since it is smaller than the sum of its proper divisors (12999773062).

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

11911396256 is a wasteful number, since it uses less digits than its factorization.

11911396256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288041 (or 1288016 counting only the distinct ones).

The product of its digits is 87480, while the sum is 44.

The spelling of 11911396256 in words is "eleven billion, nine hundred eleven million, three hundred ninety-six thousand, two hundred fifty-six".