51036664680 has 80 divisors (see below), whose sum is σ = 171539911620. Its totient is φ = 13609776384.

The previous prime is 51036664667. The next prime is 51036664727. The reversal of 51036664680 is 8646663015.

It can be written as a sum of positive squares in 2 ways, for example, as 49441301316 + 1595363364 = 222354^2 + 39942^2 .

It is a super-2 number, since 2×51036664680² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7872789 + ... + 7879268.

Almost surely, 2^51036664680 is an apocalyptic number.

It is an amenable number.

51036664680 is an abundant number, since it is smaller than the sum of its proper divisors (120503246940).

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

51036664680 is a wasteful number, since it uses less digits than its factorization.

51036664680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752080 (or 15752067 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

It can be divided in two parts, 51036 and 664680, that added together give a square (715716 = 846²).

The spelling of 51036664680 in words is "fifty-one billion, thirty-six million, six hundred sixty-four thousand, six hundred eighty".