12453515445 has 32 divisors (see below), whose sum is σ = 22784698368. Its totient is φ = 5689896768.

The previous prime is 12453515441. The next prime is 12453515449. The reversal of 12453515445 is 54451535421.

It is an interprime number because it is at equal distance from previous prime (12453515441) and next prime (12453515449).

It is not a de Polignac number, because 12453515445 - 2² = 12453515441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453515441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164272 + ... + 227798.

It is an arithmetic number, because the mean of its divisors is an integer number (712021824).

Almost surely, 2^12453515445 is an apocalyptic number.

12453515445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12453515445 is a deficient number, since it is larger than the sum of its proper divisors (10331182923).

12453515445 is a wasteful number, since it uses less digits than its factorization.

12453515445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65409.

The product of its digits is 240000, while the sum is 39.

The spelling of 12453515445 in words is "twelve billion, four hundred fifty-three million, five hundred fifteen thousand, four hundred forty-five".