869718921016 has 32 divisors (see below), whose sum is σ = 1779934020480. Its totient is φ = 395112671200.

The previous prime is 869718920989. The next prime is 869718921107. The reversal of 869718921016 is 610129817968.

It is a super-2 number, since 2×869718921016² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512930 + ... + 2838001.

It is an arithmetic number, because the mean of its divisors is an integer number (55622938140).

Almost surely, 2^869718921016 is an apocalyptic number.

It is an amenable number.

869718921016 is an abundant number, since it is smaller than the sum of its proper divisors (910215099464).

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

869718921016 is a wasteful number, since it uses less digits than its factorization.

869718921016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352795 (or 5352791 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 58.

The spelling of 869718921016 in words is "eight hundred sixty-nine billion, seven hundred eighteen million, nine hundred twenty-one thousand, sixteen".