2686661748938 has 16 divisors (see below), whose sum is σ = 4038556955040. Its totient is φ = 1340477554416.

The previous prime is 2686661748929. The next prime is 2686661748941. The reversal of 2686661748938 is 8398471666862.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3345245 + ... + 4069887.

It is an arithmetic number, because the mean of its divisors is an integer number (252409809690).

Almost surely, 2^{2686661748938} is an apocalyptic number.

2686661748938 is a deficient number, since it is larger than the sum of its proper divisors (1351895206102).

2686661748938 is a wasteful number, since it uses less digits than its factorization.

2686661748938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728581.

The product of its digits is 1003290624, while the sum is 74.

The spelling of 2686661748938 in words is "two trillion, six hundred eighty-six billion, six hundred sixty-one million, seven hundred forty-eight thousand, nine hundred thirty-eight".