51005625152 has 14 divisors (see below), whose sum is σ = 101214287538. Its totient is φ = 25502812544.

The previous prime is 51005625137. The next prime is 51005625179. The reversal of 51005625152 is 25152650015.

It can be written as a sum of positive squares in only one way, i.e., 36609464896 + 14396160256 = 191336^2 + 119984^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 398481383 + ... + 398481510.

It is an arithmetic number, because the mean of its divisors is an integer number (7229591967).

Almost surely, 2^51005625152 is an apocalyptic number.

It is an amenable number.

51005625152 is a deficient number, since it is larger than the sum of its proper divisors (50208662386).

51005625152 is an equidigital number, since it uses as much as digits as its factorization.

51005625152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796962905 (or 796962895 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 51005625152 in words is "fifty-one billion, five million, six hundred twenty-five thousand, one hundred fifty-two".