400634644113 has 48 divisors (see below), whose sum is σ = 632669356800. Its totient is φ = 242284035840.

The previous prime is 400634644097. The next prime is 400634644127. The reversal of 400634644113 is 311446436004.

400634644113 is a `hidden beast` number, since 4 + 0 + 0 + 6 + 3 + 4 + 644 + 1 + 1 + 3 = 666.

It is not a de Polignac number, because 400634644113 - 2⁴ = 400634644097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400634644183) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136874056 + ... + 136876982.

It is an arithmetic number, because the mean of its divisors is an integer number (13180611600).

Almost surely, 2^400634644113 is an apocalyptic number.

It is an amenable number.

400634644113 is a deficient number, since it is larger than the sum of its proper divisors (232034712687).

400634644113 is a wasteful number, since it uses less digits than its factorization.

400634644113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462 (or 5459 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 400634644113 in words is "four hundred billion, six hundred thirty-four million, six hundred forty-four thousand, one hundred thirteen".