45230220989 has 2 divisors, whose sum is σ = 45230220990. Its totient is φ = 45230220988.

The previous prime is 45230220979. The next prime is 45230221009. The reversal of 45230220989 is 98902203254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27262963225 + 17967257764 = 165115^2 + 134042^2 .

It is a cyclic number.

It is not a de Polignac number, because 45230220989 - 2⁸ = 45230220733 is a prime.

It is a super-2 number, since 2×45230220989² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45230220949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22615110494 + 22615110495.

It is an arithmetic number, because the mean of its divisors is an integer number (22615110495).

Almost surely, 2^45230220989 is an apocalyptic number.

It is an amenable number.

45230220989 is a deficient number, since it is larger than the sum of its proper divisors (1).

45230220989 is an equidigital number, since it uses as much as digits as its factorization.

45230220989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 45230220989 in words is "forty-five billion, two hundred thirty million, two hundred twenty thousand, nine hundred eighty-nine".