136180926729 has 45 divisors (see below), whose sum is σ = 205652558199. Its totient is φ = 89806410720.

The previous prime is 136180926703. The next prime is 136180926737. The reversal of 136180926729 is 927629081631.

The square root of 136180926729 is 369027.

It is a perfect power (a square), and thus also a powerful number.

136180926729 is a `hidden beast` number, since 13 + 618 + 0 + 9 + 2 + 6 + 7 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 868775625 + 135312151104 = 29475^2 + 367848^2 .

It is not a de Polignac number, because 136180926729 - 2⁷ = 136180926601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136180926799) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 435082677 + ... + 435082989.

Almost surely, 2^136180926729 is an apocalyptic number.

136180926729 is the 369027-th square number.

136180926729 is the 184514-th centered octagonal number.

It is an amenable number.

136180926729 is a deficient number, since it is larger than the sum of its proper divisors (69471631470).

136180926729 is an frugal number, since it uses more digits than its factorization.

136180926729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 136180926729 in words is "one hundred thirty-six billion, one hundred eighty million, nine hundred twenty-six thousand, seven hundred twenty-nine".