51715417400 has 24 divisors (see below), whose sum is σ = 120238345920. Its totient is φ = 20686166880.

The previous prime is 51715417399. The next prime is 51715417427. The reversal of 51715417400 is 471451715.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129288344 + ... + 129288743.

It is an arithmetic number, because the mean of its divisors is an integer number (5009931080).

Almost surely, 2^51715417400 is an apocalyptic number.

51715417400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51715417400 is an abundant number, since it is smaller than the sum of its proper divisors (68522928520).

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

51715417400 is a wasteful number, since it uses less digits than its factorization.

51715417400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258577103 (or 258577094 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The spelling of 51715417400 in words is "fifty-one billion, seven hundred fifteen million, four hundred seventeen thousand, four hundred".