2639020462871 has 4 divisors (see below), whose sum is σ = 2842022036952. Its totient is φ = 2436018888792.

The previous prime is 2639020462763. The next prime is 2639020462907. The reversal of 2639020462871 is 1782640209362.

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 2639020462871 - 2³⁸ = 2364142555927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639020462171) 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, 101500787021 + ... + 101500787046.

It is an arithmetic number, because the mean of its divisors is an integer number (710505509238).

Almost surely, 2^{2639020462871} is an apocalyptic number.

2639020462871 is a deficient number, since it is larger than the sum of its proper divisors (203001574081).

2639020462871 is a wasteful number, since it uses less digits than its factorization.

2639020462871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203001574080.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 2639020462871 in words is "two trillion, six hundred thirty-nine billion, twenty million, four hundred sixty-two thousand, eight hundred seventy-one".