400360400016 has 20 divisors (see below), whose sum is σ = 1034264366832. Its totient is φ = 133453466656.

The previous prime is 400360399979. The next prime is 400360400017. The reversal of 400360400016 is 610004063004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (400360400017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4170420786 + ... + 4170420881.

Almost surely, 2^400360400016 is an apocalyptic number.

It is an amenable number.

400360400016 is an abundant number, since it is smaller than the sum of its proper divisors (633903966816).

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

400360400016 is a wasteful number, since it uses less digits than its factorization.

400360400016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340841678 (or 8340841672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 400360400016 in words is "four hundred billion, three hundred sixty million, four hundred thousand, sixteen".