401651636146164 has 72 divisors (see below), whose sum is σ = 1081345735226848. Its totient is φ = 130265395495200.

The previous prime is 401651636146121. The next prime is 401651636146247. The reversal of 401651636146164 is 461641636156104.

401651636146164 is a `hidden beast` number, since 4 + 0 + 1 + 6 + 5 + 1 + 6 + 3 + 6 + 14 + 616 + 4 = 666.

It is a super-2 number, since 2×401651636146164² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 401651636146164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5584043062 + ... + 5584114989.

Almost surely, 2^{401651636146164} is an apocalyptic number.

It is an amenable number.

401651636146164 is an abundant number, since it is smaller than the sum of its proper divisors (679694099080684).

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

401651636146164 is a wasteful number, since it uses less digits than its factorization.

401651636146164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168158107 (or 11168158093 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 401651636146164 in words is "four hundred one trillion, six hundred fifty-one billion, six hundred thirty-six million, one hundred forty-six thousand, one hundred sixty-four".