23439321945 has 112 divisors (see below), whose sum is σ = 46061713152. Its totient is φ = 11375199360.

The previous prime is 23439321943. The next prime is 23439321953. The reversal of 23439321945 is 54912393432.

23439321945 is a `hidden beast` number, since 2 + 3 + 4 + 393 + 219 + 45 = 666.

It is not a de Polignac number, because 23439321945 - 2¹ = 23439321943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23439321945.

It is not an unprimeable number, because it can be changed into a prime (23439321943) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 3360852 + ... + 3367818.

It is an arithmetic number, because the mean of its divisors is an integer number (411265296).

Almost surely, 2^23439321945 is an apocalyptic number.

It is an amenable number.

23439321945 is a deficient number, since it is larger than the sum of its proper divisors (22622391207).

23439321945 is an equidigital number, since it uses as much as digits as its factorization.

23439321945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074 (or 7059 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The spelling of 23439321945 in words is "twenty-three billion, four hundred thirty-nine million, three hundred twenty-one thousand, nine hundred forty-five".