520431000100400 has 60 divisors (see below), whose sum is σ = 1323884623507992. Its totient is φ = 195926964741120.

The previous prime is 520431000100357. The next prime is 520431000100421. The reversal of 520431000100400 is 4001000134025.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38266978502 + ... + 38266992101.

Almost surely, 2^{520431000100400} is an apocalyptic number.

520431000100400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520431000100400 is an abundant number, since it is smaller than the sum of its proper divisors (803453623407592).

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

520431000100400 is a wasteful number, since it uses less digits than its factorization.

520431000100400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76533970638 (or 76533970627 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 520431000100400 its reverse (4001000134025), we get a palindrome (524432000234425).

The spelling of 520431000100400 in words is "five hundred twenty trillion, four hundred thirty-one billion, one hundred thousand, four hundred".