51377354564 has 12 divisors (see below), whose sum is σ = 93010728300. Its totient is φ = 24802860768.

The previous prime is 51377354549. The next prime is 51377354591. The reversal of 51377354564 is 46545377315.

It can be written as a sum of positive squares in 2 ways, for example, as 26198012164 + 25179342400 = 161858^2 + 158680^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221453999 + ... + 221454230.

It is an arithmetic number, because the mean of its divisors is an integer number (7750894025).

Almost surely, 2^51377354564 is an apocalyptic number.

It is an amenable number.

51377354564 is a deficient number, since it is larger than the sum of its proper divisors (41633373736).

51377354564 is a wasteful number, since it uses less digits than its factorization.

51377354564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442908262 (or 442908260 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 50.

The spelling of 51377354564 in words is "fifty-one billion, three hundred seventy-seven million, three hundred fifty-four thousand, five hundred sixty-four".