401864636000 has 48 divisors (see below), whose sum is σ = 987381420480. Its totient is φ = 160745852800.

The previous prime is 401864635993. The next prime is 401864636053. The reversal of 401864636000 is 636468104.

It is a super-2 number, since 2×401864636000² (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 7 ways as a sum of consecutive naturals, for example, 50229080 + ... + 50237079.

It is an arithmetic number, because the mean of its divisors is an integer number (20570446260).

Almost surely, 2^401864636000 is an apocalyptic number.

401864636000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401864636000 is an abundant number, since it is smaller than the sum of its proper divisors (585516784480).

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

401864636000 is a wasteful number, since it uses less digits than its factorization.

401864636000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100466184 (or 100466166 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 401864636000 in words is "four hundred one billion, eight hundred sixty-four million, six hundred thirty-six thousand".