400374374385 has 16 divisors (see below), whose sum is σ = 668451129984. Its totient is φ = 204248956032.

The previous prime is 400374374359. The next prime is 400374374399. The reversal of 400374374385 is 583473473004.

It is a happy number.

It is not a de Polignac number, because 400374374385 - 2⁵ = 400374374353 is a prime.

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, 580252372 + ... + 580253061.

It is an arithmetic number, because the mean of its divisors is an integer number (41778195624).

Almost surely, 2^400374374385 is an apocalyptic number.

It is an amenable number.

400374374385 is a deficient number, since it is larger than the sum of its proper divisors (268076755599).

400374374385 is a wasteful number, since it uses less digits than its factorization.

400374374385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160505464.

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 400374374385 in words is "four hundred billion, three hundred seventy-four million, three hundred seventy-four thousand, three hundred eighty-five".