400566885555 has 32 divisors (see below), whose sum is σ = 656543121408. Its totient is φ = 208478793600.

The previous prime is 400566885533. The next prime is 400566885613. The reversal of 400566885555 is 555588665004.

It is not a de Polignac number, because 400566885555 - 2²² = 400562691251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400566885495 and 400566885504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1607331 + ... + 1839740.

It is an arithmetic number, because the mean of its divisors is an integer number (20516972544).

Almost surely, 2^400566885555 is an apocalyptic number.

400566885555 is a deficient number, since it is larger than the sum of its proper divisors (255976235853).

400566885555 is a wasteful number, since it uses less digits than its factorization.

400566885555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447267.

The product of its (nonzero) digits is 28800000, while the sum is 57.

The spelling of 400566885555 in words is "four hundred billion, five hundred sixty-six million, eight hundred eighty-five thousand, five hundred fifty-five".