136651105691 has 2 divisors, whose sum is σ = 136651105692. Its totient is φ = 136651105690.

The previous prime is 136651105579. The next prime is 136651105757. The reversal of 136651105691 is 196501156631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136651105691 - 2¹⁸ = 136650843547 is a prime.

It is not a weakly prime, because it can be changed into another prime (136651105991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68325552845 + 68325552846.

It is an arithmetic number, because the mean of its divisors is an integer number (68325552846).

Almost surely, 2^136651105691 is an apocalyptic number.

136651105691 is a deficient number, since it is larger than the sum of its proper divisors (1).

136651105691 is an equidigital number, since it uses as much as digits as its factorization.

136651105691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 136651105691 in words is "one hundred thirty-six billion, six hundred fifty-one million, one hundred five thousand, six hundred ninety-one".