136565425211661 has 64 divisors (see below), whose sum is σ = 209720145600000. Its totient is φ = 87761519359488.

The previous prime is 136565425211653. The next prime is 136565425211701. The reversal of 136565425211661 is 166112524565631.

136565425211661 is a `hidden beast` number, since 1 + 3 + 6 + 5 + 6 + 5 + 42 + 521 + 16 + 61 = 666.

It is not a de Polignac number, because 136565425211661 - 2³ = 136565425211653 is a prime.

It is a super-3 number, since 3×136565425211661³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136565425211598 and 136565425211607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136565425211261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67850215 + ... + 69833963.

It is an arithmetic number, because the mean of its divisors is an integer number (3276877275000).

Almost surely, 2^{136565425211661} is an apocalyptic number.

It is an amenable number.

136565425211661 is a deficient number, since it is larger than the sum of its proper divisors (73154720388339).

136565425211661 is a wasteful number, since it uses less digits than its factorization.

136565425211661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984435 (or 1984429 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 136565425211661 in words is "one hundred thirty-six trillion, five hundred sixty-five billion, four hundred twenty-five million, two hundred eleven thousand, six hundred sixty-one".