398882178051 has 64 divisors (see below), whose sum is σ = 625863490560. Its totient is φ = 221226762240.

The previous prime is 398882178001. The next prime is 398882178053. The reversal of 398882178051 is 150871288893.

It is not a de Polignac number, because 398882178051 - 2⁷ = 398882177923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398882178053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 283095235 + ... + 283096643.

It is an arithmetic number, because the mean of its divisors is an integer number (9779117040).

Almost surely, 2^398882178051 is an apocalyptic number.

398882178051 is a deficient number, since it is larger than the sum of its proper divisors (226981312509).

398882178051 is a wasteful number, since it uses less digits than its factorization.

398882178051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924.

The product of its (nonzero) digits is 7741440, while the sum is 60.

The spelling of 398882178051 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, one hundred seventy-eight thousand, fifty-one".