51065655011655 has 32 divisors (see below), whose sum is σ = 86053389081600. Its totient is φ = 25787171498112.

The previous prime is 51065655011647. The next prime is 51065655011663. The reversal of 51065655011655 is 55611055656015.

51065655011655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51065655011647) and next prime (51065655011663).

It is not a de Polignac number, because 51065655011655 - 2³ = 51065655011647 is a prime.

It is a super-2 number, since 2×51065655011655² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51065655011598 and 51065655011607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49567759 + ... + 50587488.

It is an arithmetic number, because the mean of its divisors is an integer number (2689168408800).

Almost surely, 2^{51065655011655} is an apocalyptic number.

51065655011655 is a deficient number, since it is larger than the sum of its proper divisors (34987734069945).

51065655011655 is a wasteful number, since it uses less digits than its factorization.

51065655011655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100157063.

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 51065655011655 in words is "fifty-one trillion, sixty-five billion, six hundred fifty-five million, eleven thousand, six hundred fifty-five".