23689559420 has 24 divisors (see below), whose sum is σ = 49793719248. Its totient is φ = 9467129600.

The previous prime is 23689559417. The next prime is 23689559459. The reversal of 23689559420 is 2495598632.

It is a super-2 number, since 2×23689559420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521021 + ... + 564660.

It is an arithmetic number, because the mean of its divisors is an integer number (2074738302).

Almost surely, 2^23689559420 is an apocalyptic number.

23689559420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23689559420 is an abundant number, since it is smaller than the sum of its proper divisors (26104159828).

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

23689559420 is a wasteful number, since it uses less digits than its factorization.

23689559420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086781 (or 1086779 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 23689559420 in words is "twenty-three billion, six hundred eighty-nine million, five hundred fifty-nine thousand, four hundred twenty".