51393460953 has 16 divisors (see below), whose sum is σ = 68952211200. Its totient is φ = 34048758480.

The previous prime is 51393460939. The next prime is 51393460991. The reversal of 51393460953 is 35906439315.

It is not a de Polignac number, because 51393460953 - 2²¹ = 51391363801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51393460253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817618 + ... + 878228.

It is an arithmetic number, because the mean of its divisors is an integer number (4309513200).

Almost surely, 2^51393460953 is an apocalyptic number.

It is an amenable number.

51393460953 is a deficient number, since it is larger than the sum of its proper divisors (17558750247).

51393460953 is a wasteful number, since it uses less digits than its factorization.

51393460953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62372.

The product of its (nonzero) digits is 1312200, while the sum is 48.

The spelling of 51393460953 in words is "fifty-one billion, three hundred ninety-three million, four hundred sixty thousand, nine hundred fifty-three".