2040947588639 has 4 divisors (see below), whose sum is σ = 2090726798160. Its totient is φ = 1991168379120.

The previous prime is 2040947588609. The next prime is 2040947588677. The reversal of 2040947588639 is 9368857490402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040947588639 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 (2040947588609) 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, 24889604699 + ... + 24889604780.

It is an arithmetic number, because the mean of its divisors is an integer number (522681699540).

Almost surely, 2^{2040947588639} is an apocalyptic number.

2040947588639 is a deficient number, since it is larger than the sum of its proper divisors (49779209521).

2040947588639 is an equidigital number, since it uses as much as digits as its factorization.

2040947588639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49779209520.

The product of its (nonzero) digits is 104509440, while the sum is 65.

The spelling of 2040947588639 in words is "two trillion, forty billion, nine hundred forty-seven million, five hundred eighty-eight thousand, six hundred thirty-nine".