51265488956 has 48 divisors (see below), whose sum is σ = 99645836640. Its totient is φ = 22882590720.

The previous prime is 51265488947. The next prime is 51265488961. The reversal of 51265488956 is 65988456215.

It is a junction number, because it is equal to n+sod(n) for n = 51265488895 and 51265488904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700700 + ... + 770396.

It is an arithmetic number, because the mean of its divisors is an integer number (2075954930).

Almost surely, 2^51265488956 is an apocalyptic number.

It is an amenable number.

51265488956 is a deficient number, since it is larger than the sum of its proper divisors (48380347684).

51265488956 is a wasteful number, since it uses less digits than its factorization.

51265488956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70014 (or 70012 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 59.

The spelling of 51265488956 in words is "fifty-one billion, two hundred sixty-five million, four hundred eighty-eight thousand, nine hundred fifty-six".