400477575640 has 16 divisors (see below), whose sum is σ = 901074545280. Its totient is φ = 160191030240.

The previous prime is 400477575637. The next prime is 400477575647. The reversal of 400477575640 is 46575774004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400477575647) 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, 5005969656 + ... + 5005969735.

It is an arithmetic number, because the mean of its divisors is an integer number (56317159080).

Almost surely, 2^400477575640 is an apocalyptic number.

400477575640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400477575640 is an abundant number, since it is smaller than the sum of its proper divisors (500596969640).

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

400477575640 is a wasteful number, since it uses less digits than its factorization.

400477575640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011939402 (or 10011939398 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 49.

The spelling of 400477575640 in words is "four hundred billion, four hundred seventy-seven million, five hundred seventy-five thousand, six hundred forty".