401606364656444 has 12 divisors (see below), whose sum is σ = 702815994271944. Its totient is φ = 200801794864464.

The previous prime is 401606364656411. The next prime is 401606364656467. The reversal of 401606364656444 is 444656463606104.

It is a super-2 number, since 2×401606364656444² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346214534 + ... + 347372589.

It is an arithmetic number, because the mean of its divisors is an integer number (58567999522662).

Almost surely, 2^{401606364656444} is an apocalyptic number.

It is an amenable number.

401606364656444 is a deficient number, since it is larger than the sum of its proper divisors (301209629615500).

401606364656444 is a wasteful number, since it uses less digits than its factorization.

401606364656444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693731884 (or 693731882 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 59.

The spelling of 401606364656444 in words is "four hundred one trillion, six hundred six billion, three hundred sixty-four million, six hundred fifty-six thousand, four hundred forty-four".