400564145642 has 8 divisors (see below), whose sum is σ = 602661464832. Its totient is φ = 199676990700.

The previous prime is 400564145629. The next prime is 400564145669. The reversal of 400564145642 is 246541465004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 400564145642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302540234 + ... + 302541557.

It is an arithmetic number, because the mean of its divisors is an integer number (75332683104).

Almost surely, 2^400564145642 is an apocalyptic number.

400564145642 is a deficient number, since it is larger than the sum of its proper divisors (202097319190).

400564145642 is a wasteful number, since it uses less digits than its factorization.

400564145642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605082124.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 400564145642 in words is "four hundred billion, five hundred sixty-four million, one hundred forty-five thousand, six hundred forty-two".