23681533439 has 8 divisors (see below), whose sum is σ = 23741448192. Its totient is φ = 23621667160.

The previous prime is 23681533427. The next prime is 23681533459. The reversal of 23681533439 is 93433518632.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23681533439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23681533393 and 23681533402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23681533459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090562 + ... + 1112064.

It is an arithmetic number, because the mean of its divisors is an integer number (2967681024).

Almost surely, 2^23681533439 is an apocalyptic number.

23681533439 is a deficient number, since it is larger than the sum of its proper divisors (59914753).

23681533439 is a wasteful number, since it uses less digits than its factorization.

23681533439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24237.

The product of its digits is 1399680, while the sum is 47.

The spelling of 23681533439 in words is "twenty-three billion, six hundred eighty-one million, five hundred thirty-three thousand, four hundred thirty-nine".