135856626658507 has 2 divisors, whose sum is σ = 135856626658508. Its totient is φ = 135856626658506.

The previous prime is 135856626658499. The next prime is 135856626658553. The reversal of 135856626658507 is 705856626658531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135856626658507 - 2³ = 135856626658499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135856626658507.

It is not a weakly prime, because it can be changed into another prime (135856626658567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67928313329253 + 67928313329254.

It is an arithmetic number, because the mean of its divisors is an integer number (67928313329254).

Almost surely, 2^{135856626658507} is an apocalyptic number.

135856626658507 is a deficient number, since it is larger than the sum of its proper divisors (1).

135856626658507 is an equidigital number, since it uses as much as digits as its factorization.

135856626658507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280000, while the sum is 73.

The spelling of 135856626658507 in words is "one hundred thirty-five trillion, eight hundred fifty-six billion, six hundred twenty-six million, six hundred fifty-eight thousand, five hundred seven".