15626132945 has 4 divisors (see below), whose sum is σ = 18751359540. Its totient is φ = 12500906352.

The previous prime is 15626132927. The next prime is 15626132957. The reversal of 15626132945 is 54923162651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54923162651 = 7 ⋅7846166093.

It can be written as a sum of positive squares in 2 ways, for example, as 4870783681 + 10755349264 = 69791^2 + 103708^2 .

It is a cyclic number.

It is not a de Polignac number, because 15626132945 - 2⁶ = 15626132881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15626132896 and 15626132905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562613290 + ... + 1562613299.

It is an arithmetic number, because the mean of its divisors is an integer number (4687839885).

Almost surely, 2^15626132945 is an apocalyptic number.

It is an amenable number.

15626132945 is a deficient number, since it is larger than the sum of its proper divisors (3125226595).

15626132945 is an equidigital number, since it uses as much as digits as its factorization.

15626132945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125226594.

The product of its digits is 388800, while the sum is 44.

The spelling of 15626132945 in words is "fifteen billion, six hundred twenty-six million, one hundred thirty-two thousand, nine hundred forty-five".