135580124557 has 2 divisors, whose sum is σ = 135580124558. Its totient is φ = 135580124556.

The previous prime is 135580124527. The next prime is 135580124623. The reversal of 135580124557 is 755421085531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115862628996 + 19717495561 = 340386^2 + 140419^2 .

It is a cyclic number.

It is not a de Polignac number, because 135580124557 - 2²⁷ = 135445906829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135580124507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67790062278 + 67790062279.

It is an arithmetic number, because the mean of its divisors is an integer number (67790062279).

Almost surely, 2^135580124557 is an apocalyptic number.

It is an amenable number.

135580124557 is a deficient number, since it is larger than the sum of its proper divisors (1).

135580124557 is an equidigital number, since it uses as much as digits as its factorization.

135580124557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840000, while the sum is 46.

The spelling of 135580124557 in words is "one hundred thirty-five billion, five hundred eighty million, one hundred twenty-four thousand, five hundred fifty-seven".