51780982115 has 16 divisors (see below), whose sum is σ = 62224920576. Its totient is φ = 41366344800.

The previous prime is 51780982063. The next prime is 51780982117. The reversal of 51780982115 is 51128908715.

It is not a de Polignac number, because 51780982115 - 2²⁰ = 51779933539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51780982115.

It is not an unprimeable number, because it can be changed into a prime (51780982117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17127494 + ... + 17130516.

It is an arithmetic number, because the mean of its divisors is an integer number (3889057536).

Almost surely, 2^51780982115 is an apocalyptic number.

51780982115 is a deficient number, since it is larger than the sum of its proper divisors (10443938461).

51780982115 is a wasteful number, since it uses less digits than its factorization.

51780982115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730.

The product of its (nonzero) digits is 201600, while the sum is 47.

The spelling of 51780982115 in words is "fifty-one billion, seven hundred eighty million, nine hundred eighty-two thousand, one hundred fifteen".