45015391571 has 4 divisors (see below), whose sum is σ = 45022854192. Its totient is φ = 45007928952.

The previous prime is 45015391567. The next prime is 45015391573. The reversal of 45015391571 is 17519351054.

45015391571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45015391571 - 2² = 45015391567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45015391573) 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, 3722255 + ... + 3734328.

It is an arithmetic number, because the mean of its divisors is an integer number (11255713548).

Almost surely, 2^45015391571 is an apocalyptic number.

45015391571 is a deficient number, since it is larger than the sum of its proper divisors (7462621).

45015391571 is an equidigital number, since it uses as much as digits as its factorization.

45015391571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462620.

The product of its (nonzero) digits is 94500, while the sum is 41.

The spelling of 45015391571 in words is "forty-five billion, fifteen million, three hundred ninety-one thousand, five hundred seventy-one".