136181615957 has 2 divisors, whose sum is σ = 136181615958. Its totient is φ = 136181615956.

The previous prime is 136181615953. The next prime is 136181615971. The reversal of 136181615957 is 759516181631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109263963601 + 26917652356 = 330551^2 + 164066^2 .

It is an emirp because it is prime and its reverse (759516181631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136181615957 - 2² = 136181615953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136181615899 and 136181615908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136181615953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68090807978 + 68090807979.

It is an arithmetic number, because the mean of its divisors is an integer number (68090807979).

Almost surely, 2^136181615957 is an apocalyptic number.

It is an amenable number.

136181615957 is a deficient number, since it is larger than the sum of its proper divisors (1).

136181615957 is an equidigital number, since it uses as much as digits as its factorization.

136181615957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 53.

The spelling of 136181615957 in words is "one hundred thirty-six billion, one hundred eighty-one million, six hundred fifteen thousand, nine hundred fifty-seven".