45709420309 has 4 divisors (see below), whose sum is σ = 52239337504. Its totient is φ = 39179503116.

The previous prime is 45709420307. The next prime is 45709420321. The reversal of 45709420309 is 90302490754.

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 a cyclic number.

It is not a de Polignac number, because 45709420309 - 2¹ = 45709420307 is a prime.

It is a super-2 number, since 2×45709420309² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45709420307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3264958587 + ... + 3264958600.

It is an arithmetic number, because the mean of its divisors is an integer number (13059834376).

Almost surely, 2^45709420309 is an apocalyptic number.

It is an amenable number.

45709420309 is a deficient number, since it is larger than the sum of its proper divisors (6529917195).

45709420309 is an equidigital number, since it uses as much as digits as its factorization.

45709420309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529917194.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 45709420309 in words is "forty-five billion, seven hundred nine million, four hundred twenty thousand, three hundred nine".