2680815638591 has 8 divisors (see below), whose sum is σ = 2706879287424. Its totient is φ = 2654752688280.

The previous prime is 2680815638587. The next prime is 2680815638597. The reversal of 2680815638591 is 1958365180862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2680815638591 - 2² = 2680815638587 is a prime.

It is a super-2 number, since 2×2680815638591² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680815638597) 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, 10989656 + ... + 11230946.

It is an arithmetic number, because the mean of its divisors is an integer number (338359910928).

Almost surely, 2^{2680815638591} is an apocalyptic number.

2680815638591 is a deficient number, since it is larger than the sum of its proper divisors (26063648833).

2680815638591 is a wasteful number, since it uses less digits than its factorization.

2680815638591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349261.

The product of its (nonzero) digits is 24883200, while the sum is 62.

The spelling of 2680815638591 in words is "two trillion, six hundred eighty billion, eight hundred fifteen million, six hundred thirty-eight thousand, five hundred ninety-one".