869955931152 has 240 divisors, whose sum is σ = 3036121425792. Its totient is φ = 225911162880.

The previous prime is 869955931133. The next prime is 869955931157. The reversal of 869955931152 is 251139559968.

869955931152 is a `hidden beast` number, since 8 + 69 + 9 + 559 + 3 + 1 + 15 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 869955931152.

It is not an unprimeable number, because it can be changed into a prime (869955931157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86669878 + ... + 86679914.

Almost surely, 2^869955931152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869955931152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518060712896).

869955931152 is an abundant number, since it is smaller than the sum of its proper divisors (2166165494640).

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

869955931152 is a wasteful number, since it uses less digits than its factorization.

869955931152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17886 (or 17877 counting only the distinct ones).

The product of its digits is 26244000, while the sum is 63.

The spelling of 869955931152 in words is "eight hundred sixty-nine billion, nine hundred fifty-five million, nine hundred thirty-one thousand, one hundred fifty-two".