135256310605 has 64 divisors (see below), whose sum is σ = 190695653568. Its totient is φ = 91177943040.

The previous prime is 135256310597. The next prime is 135256310617. The reversal of 135256310605 is 506013652531.

It can be written as a sum of positive squares in 32 ways, for example, as 121563098281 + 13693212324 = 348659^2 + 117018^2 .

It is not a de Polignac number, because 135256310605 - 2³ = 135256310597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7829137 + ... + 7846393.

It is an arithmetic number, because the mean of its divisors is an integer number (2979619587).

Almost surely, 2^135256310605 is an apocalyptic number.

It is an amenable number.

135256310605 is a deficient number, since it is larger than the sum of its proper divisors (55439342963).

135256310605 is a wasteful number, since it uses less digits than its factorization.

135256310605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17506.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 135256310605 in words is "one hundred thirty-five billion, two hundred fifty-six million, three hundred ten thousand, six hundred five".