12504311455 has 4 divisors (see below), whose sum is σ = 15005173752. Its totient is φ = 10003449160.

The previous prime is 12504311447. The next prime is 12504311459. The reversal of 12504311455 is 55411340521.

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

It is not a de Polignac number, because 12504311455 - 2³ = 12504311447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504311459) 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, 1250431141 + ... + 1250431150.

It is an arithmetic number, because the mean of its divisors is an integer number (3751293438).

Almost surely, 2^12504311455 is an apocalyptic number.

12504311455 is a deficient number, since it is larger than the sum of its proper divisors (2500862297).

12504311455 is an equidigital number, since it uses as much as digits as its factorization.

12504311455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500862296.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 12504311455 its reverse (55411340521), we get a palindrome (67915651976).

The spelling of 12504311455 in words is "twelve billion, five hundred four million, three hundred eleven thousand, four hundred fifty-five".