136566546551 has 4 divisors (see below), whose sum is σ = 142504222512. Its totient is φ = 130628870592.

The previous prime is 136566546521. The next prime is 136566546581. The reversal of 136566546551 is 155645665631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155645665631 = 883 ⋅176269157.

It is an interprime number because it is at equal distance from previous prime (136566546521) and next prime (136566546581).

It is a cyclic number.

It is not a de Polignac number, because 136566546551 - 2²⁶ = 136499437687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136566546493 and 136566546502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136566546521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2968837946 + ... + 2968837991.

It is an arithmetic number, because the mean of its divisors is an integer number (35626055628).

Almost surely, 2^136566546551 is an apocalyptic number.

136566546551 is a deficient number, since it is larger than the sum of its proper divisors (5937675961).

136566546551 is an equidigital number, since it uses as much as digits as its factorization.

136566546551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937675960.

The product of its digits is 9720000, while the sum is 53.

The spelling of 136566546551 in words is "one hundred thirty-six billion, five hundred sixty-six million, five hundred forty-six thousand, five hundred fifty-one".