51455137356 has 288 divisors, whose sum is σ = 167776627200. Its totient is φ = 13550302080.

The previous prime is 51455137339. The next prime is 51455137361. The reversal of 51455137356 is 65373155415.

51455137356 is a `hidden beast` number, since 5 + 14 + 5 + 513 + 73 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3713361 + ... + 3727191.

Almost surely, 2^51455137356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51455137356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83888313600).

51455137356 is an abundant number, since it is smaller than the sum of its proper divisors (116321489844).

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

51455137356 is a wasteful number, since it uses less digits than its factorization.

51455137356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13914 (or 13899 counting only the distinct ones).

The product of its digits is 945000, while the sum is 45.

The spelling of 51455137356 in words is "fifty-one billion, four hundred fifty-five million, one hundred thirty-seven thousand, three hundred fifty-six".