2687620077021 has 32 divisors (see below), whose sum is σ = 4080223964160. Its totient is φ = 1557662374400.

The previous prime is 2687620077017. The next prime is 2687620077029. The reversal of 2687620077021 is 1207700267862.

It is not a de Polignac number, because 2687620077021 - 2² = 2687620077017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687620077029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2713741 + ... + 3569261.

It is an arithmetic number, because the mean of its divisors is an integer number (127506998880).

Almost surely, 2^{2687620077021} is an apocalyptic number.

It is an amenable number.

2687620077021 is a deficient number, since it is larger than the sum of its proper divisors (1392603887139).

2687620077021 is a wasteful number, since it uses less digits than its factorization.

2687620077021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859697.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 2687620077021 in words is "two trillion, six hundred eighty-seven billion, six hundred twenty million, seventy-seven thousand, twenty-one".