400651042456 has 32 divisors (see below), whose sum is σ = 886232724480. Its totient is φ = 166168634400.

The previous prime is 400651042453. The next prime is 400651042471. The reversal of 400651042456 is 654240156004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400651042453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115393150 + ... + 115396621.

It is an arithmetic number, because the mean of its divisors is an integer number (27694772640).

Almost surely, 2^400651042456 is an apocalyptic number.

It is an amenable number.

400651042456 is an abundant number, since it is smaller than the sum of its proper divisors (485581682024).

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

400651042456 is a wasteful number, since it uses less digits than its factorization.

400651042456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230789815 (or 230789811 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 400651042456 in words is "four hundred billion, six hundred fifty-one million, forty-two thousand, four hundred fifty-six".