401945278015 has 16 divisors (see below), whose sum is σ = 497319014016. Its totient is φ = 311680605600.

The previous prime is 401945278003. The next prime is 401945278037. The reversal of 401945278015 is 510872549104.

It is not a de Polignac number, because 401945278015 - 2²⁵ = 401911723583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7107381 + ... + 7163710.

It is an arithmetic number, because the mean of its divisors is an integer number (31082438376).

Almost surely, 2^401945278015 is an apocalyptic number.

401945278015 is a deficient number, since it is larger than the sum of its proper divisors (95373736001).

401945278015 is a wasteful number, since it uses less digits than its factorization.

401945278015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271270.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 401945278015 in words is "four hundred one billion, nine hundred forty-five million, two hundred seventy-eight thousand, fifteen".