400018564206 has 32 divisors (see below), whose sum is σ = 895715884800. Its totient is φ = 132321660120.

The previous prime is 400018564151. The next prime is 400018564213. The reversal of 400018564206 is 602465810004.

400018564206 is a `hidden beast` number, since 4 + 0 + 0 + 0 + 1 + 8 + 5 + 642 + 0 + 6 = 666.

It is a congruent number.

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, 28266786 + ... + 28280933.

It is an arithmetic number, because the mean of its divisors is an integer number (27991121400).

Almost surely, 2^400018564206 is an apocalyptic number.

400018564206 is an abundant number, since it is smaller than the sum of its proper divisors (495697320594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400018564206 is a wasteful number, since it uses less digits than its factorization.

400018564206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56547861 (or 56547855 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 400018564206 in words is "four hundred billion, eighteen million, five hundred sixty-four thousand, two hundred six".