869904271872 has 800 divisors, whose sum is σ = 2810892091392. Its totient is φ = 267167932416.

The previous prime is 869904271837. The next prime is 869904271903. The reversal of 869904271872 is 278172409968.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5209007533 + ... + 5209007699.

Almost surely, 2^869904271872 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 869904271872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405446045696).

869904271872 is an abundant number, since it is smaller than the sum of its proper divisors (1940987819520).

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

869904271872 is a wasteful number, since it uses less digits than its factorization.

869904271872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 869904271872 in words is "eight hundred sixty-nine billion, nine hundred four million, two hundred seventy-one thousand, eight hundred seventy-two".