2139102761 has 8 divisors (see below), whose sum is σ = 2183062560. Its totient is φ = 2095399872.

The previous prime is 2139102751. The next prime is 2139102803. The reversal of 2139102761 is 1672019312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2139102761 - 2¹⁸ = 2138840617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139102751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47360 + ... + 80753.

It is an arithmetic number, because the mean of its divisors is an integer number (272882820).

Almost surely, 2^2139102761 is an apocalyptic number.

It is an amenable number.

2139102761 is a deficient number, since it is larger than the sum of its proper divisors (43959799).

2139102761 is a wasteful number, since it uses less digits than its factorization.

2139102761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128455.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2139102761 is about 46250.4352520060. The cubic root of 2139102761 is about 1288.4786184750.

The spelling of 2139102761 in words is "two billion, one hundred thirty-nine million, one hundred two thousand, seven hundred sixty-one".