135154557711557 has 2 divisors, whose sum is σ = 135154557711558. Its totient is φ = 135154557711556.

The previous prime is 135154557711541. The next prime is 135154557711581. The reversal of 135154557711557 is 755117755451531.

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., 129712760500801 + 5441797210756 = 11389151^2 + 2332766^2 .

It is a cyclic number.

It is not a de Polignac number, because 135154557711557 - 2⁴ = 135154557711541 is a prime.

It is a super-2 number, since 2×135154557711557² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135154557711557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135154557713557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67577278855778 + 67577278855779.

It is an arithmetic number, because the mean of its divisors is an integer number (67577278855779).

Almost surely, 2^{135154557711557} is an apocalyptic number.

It is an amenable number.

135154557711557 is a deficient number, since it is larger than the sum of its proper divisors (1).

135154557711557 is an equidigital number, since it uses as much as digits as its factorization.

135154557711557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64312500, while the sum is 62.

The spelling of 135154557711557 in words is "one hundred thirty-five trillion, one hundred fifty-four billion, five hundred fifty-seven million, seven hundred eleven thousand, five hundred fifty-seven".