136920916247 has 4 divisors (see below), whose sum is σ = 144127280280. Its totient is φ = 129714552216.

The previous prime is 136920916183. The next prime is 136920916271. The reversal of 136920916247 is 742619029631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136920916247 - 2⁶ = 136920916183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136920916195 and 136920916204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136920916147) 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, 3603181988 + ... + 3603182025.

It is an arithmetic number, because the mean of its divisors is an integer number (36031820070).

Almost surely, 2^136920916247 is an apocalyptic number.

136920916247 is a deficient number, since it is larger than the sum of its proper divisors (7206364033).

136920916247 is an equidigital number, since it uses as much as digits as its factorization.

136920916247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206364032.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 136920916247 in words is "one hundred thirty-six billion, nine hundred twenty million, nine hundred sixteen thousand, two hundred forty-seven".