23145421045 has 16 divisors (see below), whose sum is σ = 29319186240. Its totient is φ = 17492073984.

The previous prime is 23145421037. The next prime is 23145421051. The reversal of 23145421045 is 54012454132.

It is a cyclic number.

It is not a de Polignac number, because 23145421045 - 2³ = 23145421037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23145420998 and 23145421016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311559 + ... + 378628.

It is an arithmetic number, because the mean of its divisors is an integer number (1832449140).

Almost surely, 2^23145421045 is an apocalyptic number.

It is an amenable number.

23145421045 is a deficient number, since it is larger than the sum of its proper divisors (6173765195).

23145421045 is a wasteful number, since it uses less digits than its factorization.

23145421045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690564.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 23145421045 its reverse (54012454132), we get a palindrome (77157875177).

The spelling of 23145421045 in words is "twenty-three billion, one hundred forty-five million, four hundred twenty-one thousand, forty-five".