136566241565 has 16 divisors (see below), whose sum is σ = 176551027968. Its totient is φ = 100811532096.

The previous prime is 136566241531. The next prime is 136566241579. The reversal of 136566241565 is 565142665631.

It is a cyclic number.

It is not a de Polignac number, because 136566241565 - 2¹⁸ = 136565979421 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 15 ways as a sum of consecutive naturals, for example, 212117 + ... + 564026.

It is an arithmetic number, because the mean of its divisors is an integer number (11034439248).

Almost surely, 2^136566241565 is an apocalyptic number.

It is an amenable number.

136566241565 is a deficient number, since it is larger than the sum of its proper divisors (39984786403).

136566241565 is a wasteful number, since it uses less digits than its factorization.

136566241565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778868.

The product of its digits is 3888000, while the sum is 50.

The spelling of 136566241565 in words is "one hundred thirty-six billion, five hundred sixty-six million, two hundred forty-one thousand, five hundred sixty-five".