136505651 has 2 divisors, whose sum is σ = 136505652. Its totient is φ = 136505650.

The previous prime is 136505623. The next prime is 136505653. The reversal of 136505651 is 156505631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136505651 - 2⁶ = 136505587 is a prime.

It is a Sophie Germain prime.

Together with 136505653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136505653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68252825 + 68252826.

It is an arithmetic number, because the mean of its divisors is an integer number (68252826).

Almost surely, 2^136505651 is an apocalyptic number.

136505651 is a deficient number, since it is larger than the sum of its proper divisors (1).

136505651 is an equidigital number, since it uses as much as digits as its factorization.

136505651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 136505651 is about 11683.5632835193. The cubic root of 136505651 is about 514.8928686575.

The spelling of 136505651 in words is "one hundred thirty-six million, five hundred five thousand, six hundred fifty-one".