51420667400 has 48 divisors (see below), whose sum is σ = 119595916800. Its totient is φ = 20560892480.

The previous prime is 51420667399. The next prime is 51420667411. The reversal of 51420667400 is 476602415.

51420667400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51420667400² (a number of 22 digits) contains 22 as substring.

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, 531149 + ... + 620451.

It is an arithmetic number, because the mean of its divisors is an integer number (2491581600).

Almost surely, 2^51420667400 is an apocalyptic number.

51420667400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51420667400 is an abundant number, since it is smaller than the sum of its proper divisors (68175249400).

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

51420667400 is a wasteful number, since it uses less digits than its factorization.

51420667400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92198 (or 92189 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 51420667400 in words is "fifty-one billion, four hundred twenty million, six hundred sixty-seven thousand, four hundred".