51195945472 has 80 divisors (see below), whose sum is σ = 120676419072. Its totient is φ = 21233295360.

The previous prime is 51195945439. The next prime is 51195945481. The reversal of 51195945472 is 27454959115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119293 + ... + 341500.

Almost surely, 2^51195945472 is an apocalyptic number.

It is an amenable number.

51195945472 is an abundant number, since it is smaller than the sum of its proper divisors (69480473600).

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

51195945472 is an equidigital number, since it uses as much as digits as its factorization.

51195945472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460849 (or 460833 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 52.

The spelling of 51195945472 in words is "fifty-one billion, one hundred ninety-five million, nine hundred forty-five thousand, four hundred seventy-two".