51253561036 has 18 divisors (see below), whose sum is σ = 94418090340. Its totient is φ = 24277067712.

The previous prime is 51253561027. The next prime is 51253561043. The reversal of 51253561036 is 63016535215.

It is a junction number, because it is equal to n+sod(n) for n = 51253560986 and 51253561004.

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, 1960660 + ... + 1986628.

Almost surely, 2^51253561036 is an apocalyptic number.

It is an amenable number.

51253561036 is a deficient number, since it is larger than the sum of its proper divisors (43164529304).

51253561036 is an frugal number, since it uses more digits than its factorization.

51253561036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51961 (or 25990 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 51253561036 in words is "fifty-one billion, two hundred fifty-three million, five hundred sixty-one thousand, thirty-six".