2136708673 has 4 divisors (see below), whose sum is σ = 2330954928. Its totient is φ = 1942462420.

The previous prime is 2136708667. The next prime is 2136708677. The reversal of 2136708673 is 3768076312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2136708673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136708677) 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, 97123111 + ... + 97123132.

It is an arithmetic number, because the mean of its divisors is an integer number (582738732).

Almost surely, 2^2136708673 is an apocalyptic number.

It is an amenable number.

2136708673 is a deficient number, since it is larger than the sum of its proper divisors (194246255).

2136708673 is a wasteful number, since it uses less digits than its factorization.

2136708673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194246254.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 2136708673 is about 46224.5462173508. The cubic root of 2136708673 is about 1287.9977497694.

The spelling of 2136708673 in words is "two billion, one hundred thirty-six million, seven hundred eight thousand, six hundred seventy-three".