401959211013 has 12 divisors (see below), whose sum is σ = 582027333420. Its totient is φ = 267317614656.

The previous prime is 401959211009. The next prime is 401959211023. The reversal of 401959211013 is 310112959104.

401959211013 is a `hidden beast` number, since 40 + 1 + 9 + 592 + 1 + 10 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 390177628164 + 11781582849 = 624642^2 + 108543^2 .

It is not a de Polignac number, because 401959211013 - 2² = 401959211009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401959211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54595506 + ... + 54602867.

It is an arithmetic number, because the mean of its divisors is an integer number (48502277785).

Almost surely, 2^401959211013 is an apocalyptic number.

It is an amenable number.

401959211013 is a deficient number, since it is larger than the sum of its proper divisors (180068122407).

401959211013 is a wasteful number, since it uses less digits than its factorization.

401959211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109198788 (or 109198785 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The spelling of 401959211013 in words is "four hundred one billion, nine hundred fifty-nine million, two hundred eleven thousand, thirteen".