15475047545 has 4 divisors (see below), whose sum is σ = 18570057060. Its totient is φ = 12380038032.

The previous prime is 15475047527. The next prime is 15475047563. The reversal of 15475047545 is 54574057451.

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

It is an interprime number because it is at equal distance from previous prime (15475047527) and next prime (15475047563).

It can be written as a sum of positive squares in 2 ways, for example, as 7020428944 + 8454618601 = 83788^2 + 91949^2 .

It is a cyclic number.

It is not a de Polignac number, because 15475047545 - 2¹⁸ = 15474785401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15475047545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547504750 + ... + 1547504759.

It is an arithmetic number, because the mean of its divisors is an integer number (4642514265).

Almost surely, 2^15475047545 is an apocalyptic number.

It is an amenable number.

15475047545 is a deficient number, since it is larger than the sum of its proper divisors (3095009515).

15475047545 is an equidigital number, since it uses as much as digits as its factorization.

15475047545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095009514.

The product of its (nonzero) digits is 1960000, while the sum is 47.

The spelling of 15475047545 in words is "fifteen billion, four hundred seventy-five million, forty-seven thousand, five hundred forty-five".