401015515515 has 16 divisors (see below), whose sum is σ = 642752474400. Its totient is φ = 213499058432.

The previous prime is 401015515477. The next prime is 401015515519. The reversal of 401015515515 is 515515510104.

It is a cyclic number.

It is not a de Polignac number, because 401015515515 - 2⁶ = 401015515451 is a prime.

It is a super-2 number, since 2×401015515515² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401015515519) 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 15 ways as a sum of consecutive naturals, for example, 23483880 + ... + 23500949.

It is an arithmetic number, because the mean of its divisors is an integer number (40172029650).

Almost surely, 2^401015515515 is an apocalyptic number.

401015515515 is a deficient number, since it is larger than the sum of its proper divisors (241736958885).

401015515515 is a wasteful number, since it uses less digits than its factorization.

401015515515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46985406.

The product of its (nonzero) digits is 12500, while the sum is 33.

The spelling of 401015515515 in words is "four hundred one billion, fifteen million, five hundred fifteen thousand, five hundred fifteen".