15146656643 has 4 divisors (see below), whose sum is σ = 15152941368. Its totient is φ = 15140371920.

The previous prime is 15146656633. The next prime is 15146656661. The reversal of 15146656643 is 34665664151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34665664151 = 139397 ⋅248683.

It is a cyclic number.

It is not a de Polignac number, because 15146656643 - 2⁴ = 15146656627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15146656633) 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, 3138746 + ... + 3143567.

It is an arithmetic number, because the mean of its divisors is an integer number (3788235342).

Almost surely, 2^15146656643 is an apocalyptic number.

15146656643 is a deficient number, since it is larger than the sum of its proper divisors (6284725).

15146656643 is an equidigital number, since it uses as much as digits as its factorization.

15146656643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284724.

The product of its digits is 1555200, while the sum is 47.

The spelling of 15146656643 in words is "fifteen billion, one hundred forty-six million, six hundred fifty-six thousand, six hundred forty-three".