45707017721 has 2 divisors, whose sum is σ = 45707017722. Its totient is φ = 45707017720.

The previous prime is 45707017673. The next prime is 45707017781. The reversal of 45707017721 is 12771070754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45684360121 + 22657600 = 213739^2 + 4760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45707017721 is a prime.

It is not a weakly prime, because it can be changed into another prime (45707017781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22853508860 + 22853508861.

It is an arithmetic number, because the mean of its divisors is an integer number (22853508861).

Almost surely, 2^45707017721 is an apocalyptic number.

It is an amenable number.

45707017721 is a deficient number, since it is larger than the sum of its proper divisors (1).

45707017721 is an equidigital number, since it uses as much as digits as its factorization.

45707017721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96040, while the sum is 41.

The spelling of 45707017721 in words is "forty-five billion, seven hundred seven million, seventeen thousand, seven hundred twenty-one".