134636521157 has 2 divisors, whose sum is σ = 134636521158. Its totient is φ = 134636521156.

The previous prime is 134636521153. The next prime is 134636521237. The reversal of 134636521157 is 751125636431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70357032001 + 64279489156 = 265249^2 + 253534^2 .

It is a cyclic number.

It is not a de Polignac number, because 134636521157 - 2² = 134636521153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134636521153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67318260578 + 67318260579.

It is an arithmetic number, because the mean of its divisors is an integer number (67318260579).

Almost surely, 2^134636521157 is an apocalyptic number.

It is an amenable number.

134636521157 is a deficient number, since it is larger than the sum of its proper divisors (1).

134636521157 is an equidigital number, since it uses as much as digits as its factorization.

134636521157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The spelling of 134636521157 in words is "one hundred thirty-four billion, six hundred thirty-six million, five hundred twenty-one thousand, one hundred fifty-seven".