136355223261 has 16 divisors (see below), whose sum is σ = 188822246400. Its totient is φ = 87461404848.

The previous prime is 136355223253. The next prime is 136355223317. The reversal of 136355223261 is 162322553631.

It is not a de Polignac number, because 136355223261 - 2³ = 136355223253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136355243261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8187091 + ... + 8203728.

It is an arithmetic number, because the mean of its divisors is an integer number (11801390400).

Almost surely, 2^136355223261 is an apocalyptic number.

It is an amenable number.

136355223261 is a deficient number, since it is larger than the sum of its proper divisors (52467023139).

136355223261 is a wasteful number, since it uses less digits than its factorization.

136355223261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16390928.

The product of its digits is 194400, while the sum is 39.

Adding to 136355223261 its reverse (162322553631), we get a palindrome (298677776892).

The spelling of 136355223261 in words is "one hundred thirty-six billion, three hundred fifty-five million, two hundred twenty-three thousand, two hundred sixty-one".