400465780072 has 8 divisors (see below), whose sum is σ = 750873337650. Its totient is φ = 200232890032.

The previous prime is 400465780069. The next prime is 400465780133. The reversal of 400465780072 is 270087564004.

It can be written as a sum of positive squares in only one way, i.e., 217765955716 + 182699824356 = 466654^2 + 427434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25029111247 + ... + 25029111262.

Almost surely, 2^400465780072 is an apocalyptic number.

It is an amenable number.

400465780072 is a deficient number, since it is larger than the sum of its proper divisors (350407557578).

400465780072 is a wasteful number, since it uses less digits than its factorization.

400465780072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50058222515 (or 50058222511 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 400465780072 in words is "four hundred billion, four hundred sixty-five million, seven hundred eighty thousand, seventy-two".