45415247731 has 4 divisors (see below), whose sum is σ = 51903140272. Its totient is φ = 38927355192.

The previous prime is 45415247719. The next prime is 45415247753. The reversal of 45415247731 is 13774251454.

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 45415247731 - 2³¹ = 43267764083 is a prime.

It is a super-2 number, since 2×45415247731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45415247791) 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, 3243946260 + ... + 3243946273.

It is an arithmetic number, because the mean of its divisors is an integer number (12975785068).

Almost surely, 2^45415247731 is an apocalyptic number.

45415247731 is a deficient number, since it is larger than the sum of its proper divisors (6487892541).

45415247731 is an equidigital number, since it uses as much as digits as its factorization.

45415247731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487892540.

The product of its digits is 470400, while the sum is 43.

The spelling of 45415247731 in words is "forty-five billion, four hundred fifteen million, two hundred forty-seven thousand, seven hundred thirty-one".