51022743556 has 12 divisors (see below), whose sum is σ = 89673020892. Its totient is φ = 25401880448.

The previous prime is 51022743529. The next prime is 51022743581. The reversal of 51022743556 is 65534722015.

It can be written as a sum of positive squares in 2 ways, for example, as 13371221956 + 37651521600 = 115634^2 + 194040^2 .

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 3 ways as a sum of consecutive naturals, for example, 27371785 + ... + 27373648.

It is an arithmetic number, because the mean of its divisors is an integer number (7472751741).

Almost surely, 2^51022743556 is an apocalyptic number.

It is an amenable number.

51022743556 is a deficient number, since it is larger than the sum of its proper divisors (38650277336).

51022743556 is a wasteful number, since it uses less digits than its factorization.

51022743556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54745670 (or 54745668 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 51022743556 in words is "fifty-one billion, twenty-two million, seven hundred forty-three thousand, five hundred fifty-six".