2621064684907 has 4 divisors (see below), whose sum is σ = 2621105202600. Its totient is φ = 2621024167216.

The previous prime is 2621064684893. The next prime is 2621064684937. The reversal of 2621064684907 is 7094864601262.

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

It is a cyclic number.

It is not a de Polignac number, because 2621064684907 - 2³⁹ = 2071308871019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621064684937) 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, 20161657 + ... + 20291242.

It is an arithmetic number, because the mean of its divisors is an integer number (655276300650).

Almost surely, 2^{2621064684907} is an apocalyptic number.

2621064684907 is a deficient number, since it is larger than the sum of its proper divisors (40517693).

2621064684907 is an equidigital number, since it uses as much as digits as its factorization.

2621064684907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40517692.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 2621064684907 in words is "two trillion, six hundred twenty-one billion, sixty-four million, six hundred eighty-four thousand, nine hundred seven".