745127444721547 has 48 divisors (see below), whose sum is σ = 845327225889792. Its totient is φ = 654305990849280.

The previous prime is 745127444721521. The next prime is 745127444721559.

745127444721547 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 745127444721547 - 2⁷ = 745127444721419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745127444721347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 394261678 + ... + 396147100.

It is an arithmetic number, because the mean of its divisors is an integer number (17610983872704).

Almost surely, 2^{745127444721547} is an apocalyptic number.

745127444721547 is a deficient number, since it is larger than the sum of its proper divisors (100199781168245).

745127444721547 is a wasteful number, since it uses less digits than its factorization.

745127444721547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886456 (or 1886437 counting only the distinct ones).

The product of its digits is 245862400, while the sum is 64.

The spelling of 745127444721547 in words is "seven hundred forty-five trillion, one hundred twenty-seven billion, four hundred forty-four million, seven hundred twenty-one thousand, five hundred forty-seven".