401256377208 has 64 divisors (see below), whose sum is σ = 1140522028800. Its totient is φ = 130641608160.

The previous prime is 401256377147. The next prime is 401256377237. The reversal of 401256377208 is 802773652104.

401256377208 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 5 + 637 + 7 + 2 + 0 + 8 = 666.

It is a super-2 number, since 2×401256377208² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 21591508 + ... + 21610083.

It is an arithmetic number, because the mean of its divisors is an integer number (17820656700).

Almost surely, 2^401256377208 is an apocalyptic number.

It is an amenable number.

401256377208 is an abundant number, since it is smaller than the sum of its proper divisors (739265651592).

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

401256377208 is a wasteful number, since it uses less digits than its factorization.

401256377208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43201649 (or 43201639 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 401256377208 in words is "four hundred one billion, two hundred fifty-six million, three hundred seventy-seven thousand, two hundred eight".