401291376265 has 32 divisors (see below), whose sum is σ = 529008883200. Its totient is φ = 292163901120.

The previous prime is 401291376259. The next prime is 401291376281. The reversal of 401291376265 is 562673192104.

It is a happy number.

It is not a de Polignac number, because 401291376265 - 2³ = 401291376257 is a prime.

It is a super-2 number, since 2×401291376265² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522676 + ... + 1037194.

It is an arithmetic number, because the mean of its divisors is an integer number (16531527600).

Almost surely, 2^401291376265 is an apocalyptic number.

It is an amenable number.

401291376265 is a deficient number, since it is larger than the sum of its proper divisors (127717506935).

401291376265 is an equidigital number, since it uses as much as digits as its factorization.

401291376265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514634 (or 514608 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 401291376265 in words is "four hundred one billion, two hundred ninety-one million, three hundred seventy-six thousand, two hundred sixty-five".