51370065563785 has 32 divisors (see below), whose sum is σ = 65337249710880. Its totient is φ = 38703965798400.

The previous prime is 51370065563779. The next prime is 51370065563797. The reversal of 51370065563785 is 58736556007315.

It can be written as a sum of positive squares in 16 ways, for example, as 1193016616009 + 50177048947776 = 1092253^2 + 7083576^2 .

It is not a de Polignac number, because 51370065563785 - 2⁹ = 51370065563273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31260265 + ... + 32862505.

It is an arithmetic number, because the mean of its divisors is an integer number (2041789053465).

Almost surely, 2^{51370065563785} is an apocalyptic number.

It is an amenable number.

51370065563785 is a deficient number, since it is larger than the sum of its proper divisors (13967184147095).

51370065563785 is a wasteful number, since it uses less digits than its factorization.

51370065563785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607709.

The product of its (nonzero) digits is 79380000, while the sum is 61.

The spelling of 51370065563785 in words is "fifty-one trillion, three hundred seventy billion, sixty-five million, five hundred sixty-three thousand, seven hundred eighty-five".