23420533545 has 48 divisors (see below), whose sum is σ = 42113260800. Its totient is φ = 12026394240.

The previous prime is 23420533519. The next prime is 23420533589. The reversal of 23420533545 is 54533502432.

23420533545 is a `hidden beast` number, since 23 + 42 + 0 + 53 + 3 + 545 = 666.

It is not a de Polignac number, because 23420533545 - 2⁷ = 23420533417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 443500 + ... + 493490.

It is an arithmetic number, because the mean of its divisors is an integer number (877359600).

Almost surely, 2^23420533545 is an apocalyptic number.

It is an amenable number.

23420533545 is a deficient number, since it is larger than the sum of its proper divisors (18692727255).

23420533545 is a wasteful number, since it uses less digits than its factorization.

23420533545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50390 (or 50387 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 36.

The spelling of 23420533545 in words is "twenty-three billion, four hundred twenty million, five hundred thirty-three thousand, five hundred forty-five".