51120340404 has 24 divisors (see below), whose sum is σ = 136320907968. Its totient is φ = 14605811520.

The previous prime is 51120340391. The next prime is 51120340429. The reversal of 51120340404 is 40404302115.

It is a super-2 number, since 2×51120340404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304287657 + ... + 304287824.

It is an arithmetic number, because the mean of its divisors is an integer number (5680037832).

Almost surely, 2^51120340404 is an apocalyptic number.

It is an amenable number.

51120340404 is an abundant number, since it is smaller than the sum of its proper divisors (85200567564).

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

51120340404 is a wasteful number, since it uses less digits than its factorization.

51120340404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608575495 (or 608575493 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 51120340404 its reverse (40404302115), we get a palindrome (91524642519).

The spelling of 51120340404 in words is "fifty-one billion, one hundred twenty million, three hundred forty thousand, four hundred four".