12545452451 has 4 divisors (see below), whose sum is σ = 14337659952. Its totient is φ = 10753244952.

The previous prime is 12545452441. The next prime is 12545452459. The reversal of 12545452451 is 15425454521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15425454521 = 173 ⋅89164477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12545452451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12545452459) 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, 896103740 + ... + 896103753.

It is an arithmetic number, because the mean of its divisors is an integer number (3584414988).

Almost surely, 2^12545452451 is an apocalyptic number.

12545452451 is a deficient number, since it is larger than the sum of its proper divisors (1792207501).

12545452451 is an equidigital number, since it uses as much as digits as its factorization.

12545452451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792207500.

The product of its digits is 160000, while the sum is 38.

The spelling of 12545452451 in words is "twelve billion, five hundred forty-five million, four hundred fifty-two thousand, four hundred fifty-one".