45311938721 has 8 divisors (see below), whose sum is σ = 51854033664. Its totient is φ = 38787084000.

The previous prime is 45311938709. The next prime is 45311938747. The reversal of 45311938721 is 12783911354.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45311938721 - 2³⁰ = 44238196897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45311938781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4304420 + ... + 4314933.

It is an arithmetic number, because the mean of its divisors is an integer number (6481754208).

Almost surely, 2^45311938721 is an apocalyptic number.

It is an amenable number.

45311938721 is a deficient number, since it is larger than the sum of its proper divisors (6542094943).

45311938721 is an equidigital number, since it uses as much as digits as its factorization.

45311938721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8620111.

The product of its digits is 181440, while the sum is 44.

The spelling of 45311938721 in words is "forty-five billion, three hundred eleven million, nine hundred thirty-eight thousand, seven hundred twenty-one".