401311982208 has 32 divisors (see below), whose sum is σ = 1065984953760. Its totient is φ = 133770660608.

The previous prime is 401311982189. The next prime is 401311982237. The reversal of 401311982208 is 802289113104.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×401311982208² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522541260 + ... + 522542027.

It is an arithmetic number, because the mean of its divisors is an integer number (33312029805).

Almost surely, 2^401311982208 is an apocalyptic number.

401311982208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

401311982208 is an abundant number, since it is smaller than the sum of its proper divisors (664672971552).

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

401311982208 is a wasteful number, since it uses less digits than its factorization.

401311982208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045083304 (or 1045083292 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 401311982208 in words is "four hundred one billion, three hundred eleven million, nine hundred eighty-two thousand, two hundred eight".