136455045591 has 4 divisors (see below), whose sum is σ = 181940060792. Its totient is φ = 90970030392.

The previous prime is 136455045533. The next prime is 136455045599. The reversal of 136455045591 is 195540554631.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 136455045591 - 2¹⁸ = 136454783447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136455045591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136455045599) 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, 22742507596 + ... + 22742507601.

It is an arithmetic number, because the mean of its divisors is an integer number (45485015198).

Almost surely, 2^136455045591 is an apocalyptic number.

136455045591 is a deficient number, since it is larger than the sum of its proper divisors (45485015201).

136455045591 is an equidigital number, since it uses as much as digits as its factorization.

136455045591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45485015200.

The product of its (nonzero) digits is 1620000, while the sum is 48.

It can be divided in two parts, 1364550 and 45591, that added together give a palindrome (1410141).

The spelling of 136455045591 in words is "one hundred thirty-six billion, four hundred fifty-five million, forty-five thousand, five hundred ninety-one".