869132908512 has 72 divisors (see below), whose sum is σ = 2696287328280. Its totient is φ = 263373607680.

The previous prime is 869132908477. The next prime is 869132908513. The reversal of 869132908512 is 215809231968.

869132908512 is a `hidden beast` number, since 8 + 6 + 9 + 1 + 32 + 90 + 8 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869132908513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137170587 + ... + 137176922.

It is an arithmetic number, because the mean of its divisors is an integer number (37448435115).

Almost surely, 2^869132908512 is an apocalyptic number.

It is an amenable number.

869132908512 is an abundant number, since it is smaller than the sum of its proper divisors (1827154419768).

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

869132908512 is a wasteful number, since it uses less digits than its factorization.

869132908512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274347536 (or 274347525 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 869132908512 in words is "eight hundred sixty-nine billion, one hundred thirty-two million, nine hundred eight thousand, five hundred twelve".