869521902992 has 10 divisors (see below), whose sum is σ = 1684698687078. Its totient is φ = 434760951488.

The previous prime is 869521902943. The next prime is 869521903021. The reversal of 869521902992 is 299209125968.

It can be written as a sum of positive squares in only one way, i.e., 814982839696 + 54539063296 = 902764^2 + 233536^2 .

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 as a sum of consecutive naturals, namely, 27172559453 + ... + 27172559484.

Almost surely, 2^869521902992 is an apocalyptic number.

It is an amenable number.

869521902992 is a deficient number, since it is larger than the sum of its proper divisors (815176784086).

869521902992 is a wasteful number, since it uses less digits than its factorization.

869521902992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54345118945 (or 54345118939 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 62.

The spelling of 869521902992 in words is "eight hundred sixty-nine billion, five hundred twenty-one million, nine hundred two thousand, nine hundred ninety-two".