51128463650 has 48 divisors (see below), whose sum is σ = 103796892288. Its totient is φ = 18582744000.

The previous prime is 51128463593. The next prime is 51128463667. The reversal of 51128463650 is 5636482115.

It is a super-2 number, since 2×51128463650² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51128463598 and 51128463607.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1112120 + ... + 1157180.

It is an arithmetic number, because the mean of its divisors is an integer number (2162435256).

Almost surely, 2^51128463650 is an apocalyptic number.

51128463650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51128463650 is an abundant number, since it is smaller than the sum of its proper divisors (52668428638).

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

51128463650 is a wasteful number, since it uses less digits than its factorization.

51128463650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47147 (or 47142 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 51128463650 in words is "fifty-one billion, one hundred twenty-eight million, four hundred sixty-three thousand, six hundred fifty".