11897072612 has 12 divisors (see below), whose sum is σ = 20828957100. Its totient is φ = 5945942016.

The previous prime is 11897072557. The next prime is 11897072633. The reversal of 11897072612 is 21627079811.

It can be written as a sum of positive squares in 2 ways, for example, as 4538177956 + 7358894656 = 67366^2 + 85784^2 .

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 3 ways as a sum of consecutive naturals, for example, 638237 + ... + 656612.

It is an arithmetic number, because the mean of its divisors is an integer number (1735746425).

Almost surely, 2^11897072612 is an apocalyptic number.

It is an amenable number.

11897072612 is a deficient number, since it is larger than the sum of its proper divisors (8931884488).

11897072612 is a wasteful number, since it uses less digits than its factorization.

11897072612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297150 (or 1297148 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 44.

The spelling of 11897072612 in words is "eleven billion, eight hundred ninety-seven million, seventy-two thousand, six hundred twelve".