51465542718 has 16 divisors (see below), whose sum is σ = 105713007120. Its totient is φ = 16691527296.

The previous prime is 51465542651. The next prime is 51465542719. The reversal of 51465542718 is 81724556415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51465542719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115913163 + ... + 115913606.

It is an arithmetic number, because the mean of its divisors is an integer number (6607062945).

Almost surely, 2^51465542718 is an apocalyptic number.

51465542718 is an abundant number, since it is smaller than the sum of its proper divisors (54247464402).

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

51465542718 is a wasteful number, since it uses less digits than its factorization.

51465542718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231826811.

The product of its digits is 1344000, while the sum is 48.

The spelling of 51465542718 in words is "fifty-one billion, four hundred sixty-five million, five hundred forty-two thousand, seven hundred eighteen".