398551570023875 has 16 divisors (see below), whose sum is σ = 497395734667104. Its totient is φ = 318839092380000.

The previous prime is 398551570023809. The next prime is 398551570023881. The reversal of 398551570023875 is 578320075155893.

It is not a de Polignac number, because 398551570023875 - 2⁸ = 398551570023619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7803620 + ... + 29291630.

It is an arithmetic number, because the mean of its divisors is an integer number (31087233416694).

Almost surely, 2^{398551570023875} is an apocalyptic number.

398551570023875 is a deficient number, since it is larger than the sum of its proper divisors (98844164643229).

398551570023875 is a wasteful number, since it uses less digits than its factorization.

398551570023875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21636407 (or 21636397 counting only the distinct ones).

The product of its (nonzero) digits is 317520000, while the sum is 68.

The spelling of 398551570023875 in words is "three hundred ninety-eight trillion, five hundred fifty-one billion, five hundred seventy million, twenty-three thousand, eight hundred seventy-five".