2136620763317 has 4 divisors (see below), whose sum is σ = 2138176934220. Its totient is φ = 2135064592416.

The previous prime is 2136620763301. The next prime is 2136620763331. The reversal of 2136620763317 is 7133670266312.

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 1977536250001 + 159084513316 = 1406249^2 + 398854^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136620763317 - 2⁴ = 2136620763301 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 (2136620763397) 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, 778083392 + ... + 778086137.

It is an arithmetic number, because the mean of its divisors is an integer number (534544233555).

Almost surely, 2^{2136620763317} is an apocalyptic number.

It is an amenable number.

2136620763317 is a deficient number, since it is larger than the sum of its proper divisors (1556170903).

2136620763317 is a wasteful number, since it uses less digits than its factorization.

2136620763317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556170902.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 2136620763317 in words is "two trillion, one hundred thirty-six billion, six hundred twenty million, seven hundred sixty-three thousand, three hundred seventeen".