2218581612507 has 16 divisors (see below), whose sum is σ = 3324162417408. Its totient is φ = 1305920948640.

The previous prime is 2218581612487. The next prime is 2218581612581. The reversal of 2218581612507 is 7052161858122.

2218581612507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2218581612507 - 2²³ = 2218573223899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2218581612307) 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, 1236666669 + ... + 1236668462.

It is an arithmetic number, because the mean of its divisors is an integer number (207760151088).

Almost surely, 2^{2218581612507} is an apocalyptic number.

2218581612507 is a deficient number, since it is larger than the sum of its proper divisors (1105580804901).

2218581612507 is a wasteful number, since it uses less digits than its factorization.

2218581612507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473335170.

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 2218581612507 in words is "two trillion, two hundred eighteen billion, five hundred eighty-one million, six hundred twelve thousand, five hundred seven".