869968032640 has 64 divisors (see below), whose sum is σ = 2376876958560. Its totient is φ = 298274752512.

The previous prime is 869968032631. The next prime is 869968032641. The reversal of 869968032640 is 46230869968.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869968032641) 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, 97090167 + ... + 97099126.

Almost surely, 2^869968032640 is an apocalyptic number.

869968032640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

869968032640 is an abundant number, since it is smaller than the sum of its proper divisors (1506908925920).

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

869968032640 is a wasteful number, since it uses less digits than its factorization.

869968032640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194189319 (or 194189307 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 869968032640 in words is "eight hundred sixty-nine billion, nine hundred sixty-eight million, thirty-two thousand, six hundred forty".