400553777764 has 24 divisors (see below), whose sum is σ = 801443021120. Its totient is φ = 171594019296.

The previous prime is 400553777737. The next prime is 400553777777. The reversal of 400553777764 is 467777355004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2927142 + ... + 3060925.

Almost surely, 2^400553777764 is an apocalyptic number.

It is an amenable number.

400553777764 is an abundant number, since it is smaller than the sum of its proper divisors (400889243356).

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

400553777764 is a wasteful number, since it uses less digits than its factorization.

400553777764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990467 (or 5990465 counting only the distinct ones).

The product of its (nonzero) digits is 17287200, while the sum is 55.

The spelling of 400553777764 in words is "four hundred billion, five hundred fifty-three million, seven hundred seventy-seven thousand, seven hundred sixty-four".