136100612581 has 2 divisors, whose sum is σ = 136100612582. Its totient is φ = 136100612580.

The previous prime is 136100612519. The next prime is 136100612629. The reversal of 136100612581 is 185216001631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131867028225 + 4233584356 = 363135^2 + 65066^2 .

It is an emirp because it is prime and its reverse (185216001631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136100612581 is a prime.

It is a super-2 number, since 2×136100612581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136100616581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68050306290 + 68050306291.

It is an arithmetic number, because the mean of its divisors is an integer number (68050306291).

Almost surely, 2^136100612581 is an apocalyptic number.

It is an amenable number.

136100612581 is a deficient number, since it is larger than the sum of its proper divisors (1).

136100612581 is an equidigital number, since it uses as much as digits as its factorization.

136100612581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 136100612581 in words is "one hundred thirty-six billion, one hundred million, six hundred twelve thousand, five hundred eighty-one".