869437537680 has 40 divisors (see below), whose sum is σ = 2695256367552. Its totient is φ = 231850009984.

The previous prime is 869437537649. The next prime is 869437537681. The reversal of 869437537680 is 86735734968.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×869437537680² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (869437537681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811327964 + ... + 1811328443.

Almost surely, 2^869437537680 is an apocalyptic number.

869437537680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

869437537680 is an abundant number, since it is smaller than the sum of its proper divisors (1825818829872).

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

869437537680 is a wasteful number, since it uses less digits than its factorization.

869437537680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622656423 (or 3622656417 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 66.

The spelling of 869437537680 in words is "eight hundred sixty-nine billion, four hundred thirty-seven million, five hundred thirty-seven thousand, six hundred eighty".