12140505655 has 4 divisors (see below), whose sum is σ = 14568606792. Its totient is φ = 9712404520.

The previous prime is 12140505653. The next prime is 12140505667. The reversal of 12140505655 is 55650504121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55650504121 = 139 ⋅400363339.

It is not a de Polignac number, because 12140505655 - 2¹ = 12140505653 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 12140505655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140505653) 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, 1214050561 + ... + 1214050570.

It is an arithmetic number, because the mean of its divisors is an integer number (3642151698).

Almost surely, 2^12140505655 is an apocalyptic number.

12140505655 is a deficient number, since it is larger than the sum of its proper divisors (2428101137).

12140505655 is an equidigital number, since it uses as much as digits as its factorization.

12140505655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428101136.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 12140505655 in words is "twelve billion, one hundred forty million, five hundred five thousand, six hundred fifty-five".