51550311317072 has 20 divisors (see below), whose sum is σ = 103322822252820. Its totient is φ = 24886357187328.

The previous prime is 51550311317069. The next prime is 51550311317107. The reversal of 51550311317072 is 27071311305515.

It can be written as a sum of positive squares in 2 ways, for example, as 23353404191296 + 28196907125776 = 4832536^2 + 5310076^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55549903973 + ... + 55549904900.

It is an arithmetic number, because the mean of its divisors is an integer number (5166141112641).

Almost surely, 2^{51550311317072} is an apocalyptic number.

It is an amenable number.

51550311317072 is an abundant number, since it is smaller than the sum of its proper divisors (51772510935748).

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

51550311317072 is a wasteful number, since it uses less digits than its factorization.

51550311317072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111099808910 (or 111099808904 counting only the distinct ones).

The product of its (nonzero) digits is 110250, while the sum is 41.

The spelling of 51550311317072 in words is "fifty-one trillion, five hundred fifty billion, three hundred eleven million, three hundred seventeen thousand, seventy-two".