2139165076637 has 4 divisors (see below), whose sum is σ = 2140154974716. Its totient is φ = 2138175178560.

The previous prime is 2139165076553. The next prime is 2139165076663. The reversal of 2139165076637 is 7366705619312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 677808070681 + 1461357005956 = 823291^2 + 1208866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2139165076637 - 2²⁰ = 2139164028061 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 (2139165076537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494945798 + ... + 494950119.

It is an arithmetic number, because the mean of its divisors is an integer number (535038743679).

Almost surely, 2^{2139165076637} is an apocalyptic number.

It is an amenable number.

2139165076637 is a deficient number, since it is larger than the sum of its proper divisors (989898079).

2139165076637 is an equidigital number, since it uses as much as digits as its factorization.

2139165076637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989898078.

The product of its (nonzero) digits is 8573040, while the sum is 56.

The spelling of 2139165076637 in words is "two trillion, one hundred thirty-nine billion, one hundred sixty-five million, seventy-six thousand, six hundred thirty-seven".