51150001566500 has 48 divisors (see below), whose sum is σ = 111926021656176. Its totient is φ = 20420729888000.

The previous prime is 51150001566491. The next prime is 51150001566511. The reversal of 51150001566500 is 566510005115.

It can be written as a sum of positive squares in 8 ways, for example, as 20132163924544 + 31017837641956 = 4486888^2 + 5569366^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97916087 + ... + 98437086.

It is an arithmetic number, because the mean of its divisors is an integer number (2331792117837).

Almost surely, 2^{51150001566500} is an apocalyptic number.

51150001566500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51150001566500 is an abundant number, since it is smaller than the sum of its proper divisors (60776020089676).

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

51150001566500 is a wasteful number, since it uses less digits than its factorization.

51150001566500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196353713 (or 196353701 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51150001566500 in words is "fifty-one trillion, one hundred fifty billion, one million, five hundred sixty-six thousand, five hundred".