400601796855 has 32 divisors (see below), whose sum is σ = 690340276416. Its totient is φ = 197198613504.

The previous prime is 400601796811. The next prime is 400601796871. The reversal of 400601796855 is 558697106004.

It is not a de Polignac number, because 400601796855 - 2²⁰ = 400600748279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400601796798 and 400601796807.

It is a congruent number.

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, 1841739 + ... + 2047731.

It is an arithmetic number, because the mean of its divisors is an integer number (21573133638).

Almost surely, 2^400601796855 is an apocalyptic number.

400601796855 is a deficient number, since it is larger than the sum of its proper divisors (289738479561).

400601796855 is a wasteful number, since it uses less digits than its factorization.

400601796855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215987.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 400601796855 in words is "four hundred billion, six hundred one million, seven hundred ninety-six thousand, eight hundred fifty-five".