51040415504 has 40 divisors (see below), whose sum is σ = 106626925440. Its totient is φ = 23528550528.

The previous prime is 51040415479. The next prime is 51040415507. The reversal of 51040415504 is 40551404015.

It is not an unprimeable number, because it can be changed into a prime (51040415507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23657 + ... + 320375.

It is an arithmetic number, because the mean of its divisors is an integer number (2665673136).

Almost surely, 2^51040415504 is an apocalyptic number.

It is an amenable number.

51040415504 is an abundant number, since it is smaller than the sum of its proper divisors (55586509936).

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

51040415504 is a wasteful number, since it uses less digits than its factorization.

51040415504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297567 (or 297561 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 51040415504 its reverse (40551404015), we get a palindrome (91591819519).

The spelling of 51040415504 in words is "fifty-one billion, forty million, four hundred fifteen thousand, five hundred four".