401234256665001 has 12 divisors (see below), whose sum is σ = 604758879611328. Its totient is φ = 255859525989144.

The previous prime is 401234256664873. The next prime is 401234256665003. The reversal of 401234256665001 is 100566652432104.

It is not a de Polignac number, because 401234256665001 - 2⁷ = 401234256664873 is a prime.

It is a super-3 number, since 3×401234256665001³ (a number of 45 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (401234256665003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 969164870965 + ... + 969164871378.

It is an arithmetic number, because the mean of its divisors is an integer number (50396573300944).

Almost surely, 2^{401234256665001} is an apocalyptic number.

It is an amenable number.

401234256665001 is a deficient number, since it is larger than the sum of its proper divisors (203524622946327).

401234256665001 is a wasteful number, since it uses less digits than its factorization.

401234256665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938329742372 (or 1938329742369 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 401234256665001 in words is "four hundred one trillion, two hundred thirty-four billion, two hundred fifty-six million, six hundred sixty-five thousand, one".