51895047456 has 72 divisors (see below), whose sum is σ = 168658910784. Its totient is φ = 14827155840.

The previous prime is 51895047437. The next prime is 51895047511. The reversal of 51895047456 is 65474059815.

It is a happy number.

51895047456 is a `hidden beast` number, since 5 + 1 + 89 + 504 + 7 + 4 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12868780 + ... + 12872811.

It is an arithmetic number, because the mean of its divisors is an integer number (2342484872).

Almost surely, 2^51895047456 is an apocalyptic number.

51895047456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51895047456 is an abundant number, since it is smaller than the sum of its proper divisors (116763863328).

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

51895047456 is a wasteful number, since it uses less digits than its factorization.

51895047456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25741614 (or 25741603 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 51895047456 in words is "fifty-one billion, eight hundred ninety-five million, forty-seven thousand, four hundred fifty-six".