401277338955 has 32 divisors (see below), whose sum is σ = 750928358400. Its totient is φ = 202750654176.

The previous prime is 401277338953. The next prime is 401277338963. The reversal of 401277338955 is 559833772104.

It is not a de Polignac number, because 401277338955 - 2¹ = 401277338953 is a prime.

It is a super-2 number, since 2×401277338955² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401277338953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78219139 + ... + 78224268.

It is an arithmetic number, because the mean of its divisors is an integer number (23466511200).

Almost surely, 2^401277338955 is an apocalyptic number.

401277338955 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

401277338955 is a deficient number, since it is larger than the sum of its proper divisors (349651019445).

401277338955 is a wasteful number, since it uses less digits than its factorization.

401277338955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156443440 (or 156443434 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 401277338955 in words is "four hundred one billion, two hundred seventy-seven million, three hundred thirty-eight thousand, nine hundred fifty-five".