51270145131818 has 16 divisors (see below), whose sum is σ = 77527393346304. Its totient is φ = 25427858021280.

The previous prime is 51270145131817. The next prime is 51270145131823. The reversal of 51270145131818 is 81813154107215.

It is not an unprimeable number, because it can be changed into a prime (51270145131817) 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, 43755155 + ... + 44911622.

It is an arithmetic number, because the mean of its divisors is an integer number (4845462084144).

Almost surely, 2^{51270145131818} is an apocalyptic number.

51270145131818 is a deficient number, since it is larger than the sum of its proper divisors (26257248214486).

51270145131818 is a wasteful number, since it uses less digits than its factorization.

51270145131818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88669117.

The product of its (nonzero) digits is 268800, while the sum is 47.

The spelling of 51270145131818 in words is "fifty-one trillion, two hundred seventy billion, one hundred forty-five million, one hundred thirty-one thousand, eight hundred eighteen".