135620126533657 has 8 divisors (see below), whose sum is σ = 136086895825920. Its totient is φ = 135153963044400.

The previous prime is 135620126533637. The next prime is 135620126533663. The reversal of 135620126533657 is 756335621026531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135620126533657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135620126533598 and 135620126533607.

It is not an unprimeable number, because it can be changed into a prime (135620126533637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151002243 + ... + 151897720.

It is an arithmetic number, because the mean of its divisors is an integer number (17010861978240).

Almost surely, 2^{135620126533657} is an apocalyptic number.

It is an amenable number.

135620126533657 is a deficient number, since it is larger than the sum of its proper divisors (466769292263).

135620126533657 is a wasteful number, since it uses less digits than its factorization.

135620126533657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302901503.

The product of its (nonzero) digits is 20412000, while the sum is 55.

The spelling of 135620126533657 in words is "one hundred thirty-five trillion, six hundred twenty billion, one hundred twenty-six million, five hundred thirty-three thousand, six hundred fifty-seven".