400737782436 has 48 divisors (see below), whose sum is σ = 951010804800. Its totient is φ = 131300348032.

The previous prime is 400737782429. The next prime is 400737782483. The reversal of 400737782436 is 634287737004.

It is a happy 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, 7470286 + ... + 7523738.

It is an arithmetic number, because the mean of its divisors is an integer number (19812725100).

Almost surely, 2^400737782436 is an apocalyptic number.

It is an amenable number.

400737782436 is an abundant number, since it is smaller than the sum of its proper divisors (550273022364).

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

400737782436 is a wasteful number, since it uses less digits than its factorization.

400737782436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64108 (or 64106 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 51.

The spelling of 400737782436 in words is "four hundred billion, seven hundred thirty-seven million, seven hundred eighty-two thousand, four hundred thirty-six".