51113612452 has 18 divisors (see below), whose sum is σ = 104052711462. Its totient is φ = 21905833824.

The previous prime is 51113612449. The next prime is 51113612483. The reversal of 51113612452 is 25421631115.

It can be written as a sum of positive squares in only one way, i.e., 47277544356 + 3836068096 = 217434^2 + 61936^2 .

It is a super-2 number, since 2×51113612452² (a number of 22 digits) contains 22 as substring.

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, 130391673 + ... + 130392064.

Almost surely, 2^51113612452 is an apocalyptic number.

It is an amenable number.

51113612452 is an abundant number, since it is smaller than the sum of its proper divisors (52939099010).

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

51113612452 is a wasteful number, since it uses less digits than its factorization.

51113612452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260783755 (or 260783746 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The spelling of 51113612452 in words is "fifty-one billion, one hundred thirteen million, six hundred twelve thousand, four hundred fifty-two".