136276672729 has 4 divisors (see below), whose sum is σ = 139959826084. Its totient is φ = 132593519376.

The previous prime is 136276672723. The next prime is 136276672751. The reversal of 136276672729 is 927276672631.

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 89549365504 + 46727307225 = 299248^2 + 216165^2 .

It is a cyclic number.

It is not a de Polignac number, because 136276672729 - 2⁷ = 136276672601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136276672723) 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, 1841576622 + ... + 1841576695.

It is an arithmetic number, because the mean of its divisors is an integer number (34989956521).

Almost surely, 2^136276672729 is an apocalyptic number.

It is an amenable number.

136276672729 is a deficient number, since it is larger than the sum of its proper divisors (3683153355).

136276672729 is an equidigital number, since it uses as much as digits as its factorization.

136276672729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683153354.

The product of its digits is 16003008, while the sum is 58.

The spelling of 136276672729 in words is "one hundred thirty-six billion, two hundred seventy-six million, six hundred seventy-two thousand, seven hundred twenty-nine".