51006260300665 has 4 divisors (see below), whose sum is σ = 61207512360804. Its totient is φ = 40805008240528.

The previous prime is 51006260300663. The next prime is 51006260300669. The reversal of 51006260300665 is 56600306260015.

It is a happy number.

51006260300665 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12021621462841 + 38984638837824 = 3467221^2 + 6243768^2 .

It is a cyclic number.

It is not a de Polignac number, because 51006260300665 - 2¹ = 51006260300663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51006260300663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100626030062 + ... + 5100626030071.

It is an arithmetic number, because the mean of its divisors is an integer number (15301878090201).

Almost surely, 2^{51006260300665} is an apocalyptic number.

It is an amenable number.

51006260300665 is a deficient number, since it is larger than the sum of its proper divisors (10201252060139).

51006260300665 is a wasteful number, since it uses less digits than its factorization.

51006260300665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201252060138.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 51006260300665 in words is "fifty-one trillion, six billion, two hundred sixty million, three hundred thousand, six hundred sixty-five".