51240462120 has 48 divisors (see below), whose sum is σ = 166531503060. Its totient is φ = 13664123136.

The previous prime is 51240462109. The next prime is 51240462167. The reversal of 51240462120 is 2126404215.

51240462120 is a `hidden beast` number, since 5 + 12 + 4 + 0 + 4 + 621 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50589906084 + 650556036 = 224922^2 + 25506^2 .

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, 71166949 + ... + 71167668.

Almost surely, 2^51240462120 is an apocalyptic number.

It is an amenable number.

51240462120 is an abundant number, since it is smaller than the sum of its proper divisors (115291040940).

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

51240462120 is a wasteful number, since it uses less digits than its factorization.

51240462120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142334634 (or 142334627 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 51240462120 its reverse (2126404215), we get a palindrome (53366866335).

The spelling of 51240462120 in words is "fifty-one billion, two hundred forty million, four hundred sixty-two thousand, one hundred twenty".