23689941890 has 16 divisors (see below), whose sum is σ = 42644882808. Its totient is φ = 9475312896.

The previous prime is 23689941887. The next prime is 23689941991. The reversal of 23689941890 is 9814998632.

It can be written as a sum of positive squares in 4 ways, for example, as 16264155961 + 7425785929 = 127531^2 + 86173^2 .

It is a super-2 number, since 2×23689941890² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82634 + ... + 232826.

Almost surely, 2^23689941890 is an apocalyptic number.

23689941890 is a deficient number, since it is larger than the sum of its proper divisors (18954940918).

23689941890 is a wasteful number, since it uses less digits than its factorization.

23689941890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165973.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 23689941890 in words is "twenty-three billion, six hundred eighty-nine million, nine hundred forty-one thousand, eight hundred ninety".