400077128008 has 16 divisors (see below), whose sum is σ = 767589839280. Its totient is φ = 195386504208.

The previous prime is 400077127999. The next prime is 400077128047. The reversal of 400077128008 is 800821770004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581507110 + ... + 581507797.

It is an arithmetic number, because the mean of its divisors is an integer number (47974364955).

Almost surely, 2^400077128008 is an apocalyptic number.

It is an amenable number.

400077128008 is a deficient number, since it is larger than the sum of its proper divisors (367512711272).

400077128008 is a wasteful number, since it uses less digits than its factorization.

400077128008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163014956 (or 1163014952 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The spelling of 400077128008 in words is "four hundred billion, seventy-seven million, one hundred twenty-eight thousand, eight".