45811187321 has 4 divisors (see below), whose sum is σ = 45973064592. Its totient is φ = 45649310052.

The previous prime is 45811187309. The next prime is 45811187333. The reversal of 45811187321 is 12378111854.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (45811187309) and next prime (45811187333).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45811187321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45811187371) 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, 80938211 + ... + 80938776.

It is an arithmetic number, because the mean of its divisors is an integer number (11493266148).

Almost surely, 2^45811187321 is an apocalyptic number.

It is an amenable number.

45811187321 is a deficient number, since it is larger than the sum of its proper divisors (161877271).

45811187321 is a wasteful number, since it uses less digits than its factorization.

45811187321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161877270.

The product of its digits is 53760, while the sum is 41.

The spelling of 45811187321 in words is "forty-five billion, eight hundred eleven million, one hundred eighty-seven thousand, three hundred twenty-one".