11897645076 has 36 divisors (see below), whose sum is σ = 30101629012. Its totient is φ = 3962317824.

The previous prime is 11897645069. The next prime is 11897645099. The reversal of 11897645076 is 67054679811.

11897645076 is a `hidden beast` number, since 1 + 189 + 7 + 6 + 450 + 7 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6508616976 + 5389028100 = 80676^2 + 73410^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107725 + ... + 188148.

Almost surely, 2^11897645076 is an apocalyptic number.

It is an amenable number.

11897645076 is an abundant number, since it is smaller than the sum of its proper divisors (18203983936).

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

11897645076 is a wasteful number, since it uses less digits than its factorization.

11897645076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297000 (or 296995 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 11897645076 in words is "eleven billion, eight hundred ninety-seven million, six hundred forty-five thousand, seventy-six".