23303066520 has 64 divisors (see below), whose sum is σ = 69920363520. Its totient is φ = 6213158784.

The previous prime is 23303066519. The next prime is 23303066539. The reversal of 23303066520 is 2566030332.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1033689 + ... + 1055991.

It is an arithmetic number, because the mean of its divisors is an integer number (1092505680).

Almost surely, 2^23303066520 is an apocalyptic number.

23303066520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23303066520 is an abundant number, since it is smaller than the sum of its proper divisors (46617297000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23303066520 is a wasteful number, since it uses less digits than its factorization.

23303066520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31024 (or 31020 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 23303066520 its reverse (2566030332), we get a palindrome (25869096852).

The spelling of 23303066520 in words is "twenty-three billion, three hundred three million, sixty-six thousand, five hundred twenty".