15345622451 has 4 divisors (see below), whose sum is σ = 15386112600. Its totient is φ = 15305132304.

The previous prime is 15345622367. The next prime is 15345622469. The reversal of 15345622451 is 15422654351.

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

It is a cyclic number.

It is not a de Polignac number, because 15345622451 - 2¹⁰ = 15345621427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15345622351) 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, 20244506 + ... + 20245263.

It is an arithmetic number, because the mean of its divisors is an integer number (3846528150).

Almost surely, 2^15345622451 is an apocalyptic number.

15345622451 is a deficient number, since it is larger than the sum of its proper divisors (40490149).

15345622451 is an equidigital number, since it uses as much as digits as its factorization.

15345622451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40490148.

The product of its digits is 144000, while the sum is 38.

The spelling of 15345622451 in words is "fifteen billion, three hundred forty-five million, six hundred twenty-two thousand, four hundred fifty-one".