401561937250 has 32 divisors (see below), whose sum is σ = 762943738752. Its totient is φ = 158227383600.

The previous prime is 401561937241. The next prime is 401561937277. The reversal of 401561937250 is 52739165104.

It is a super-2 number, since 2×401561937250² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401561937197 and 401561937206.

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, 11970174 + ... + 12003673.

It is an arithmetic number, because the mean of its divisors is an integer number (23841991836).

Almost surely, 2^401561937250 is an apocalyptic number.

401561937250 is a deficient number, since it is larger than the sum of its proper divisors (361381801502).

401561937250 is a wasteful number, since it uses less digits than its factorization.

401561937250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23973931 (or 23973921 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 401561937250 in words is "four hundred one billion, five hundred sixty-one million, nine hundred thirty-seven thousand, two hundred fifty".