401132515155 has 64 divisors (see below), whose sum is σ = 688192727040. Its totient is φ = 199147221504.

The previous prime is 401132515139. The next prime is 401132515159. The reversal of 401132515155 is 551515231104.

It is a happy number.

It is not a de Polignac number, because 401132515155 - 2⁴ = 401132515139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401132515159) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1223397 + ... + 1516233.

It is an arithmetic number, because the mean of its divisors is an integer number (10753011360).

Almost surely, 2^401132515155 is an apocalyptic number.

401132515155 is a deficient number, since it is larger than the sum of its proper divisors (287060211885).

401132515155 is a wasteful number, since it uses less digits than its factorization.

401132515155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292988.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 401132515155 its reverse (551515231104), we get a palindrome (952647746259).

The spelling of 401132515155 in words is "four hundred one billion, one hundred thirty-two million, five hundred fifteen thousand, one hundred fifty-five".