136645786201 has 4 divisors (see below), whose sum is σ = 137165352192. Its totient is φ = 136126220212.

The previous prime is 136645786181. The next prime is 136645786213. The reversal of 136645786201 is 102687546631.

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 not a de Polignac number, because 136645786201 - 2²³ = 136637397593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136645786231) 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, 259782601 + ... + 259783126.

It is an arithmetic number, because the mean of its divisors is an integer number (34291338048).

Almost surely, 2^136645786201 is an apocalyptic number.

It is an amenable number.

136645786201 is a deficient number, since it is larger than the sum of its proper divisors (519565991).

136645786201 is an equidigital number, since it uses as much as digits as its factorization.

136645786201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519565990.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 136645786201 in words is "one hundred thirty-six billion, six hundred forty-five million, seven hundred eighty-six thousand, two hundred one".