23704666981 has 6 divisors (see below), whose sum is σ = 23923763270. Its totient is φ = 23485600296.

The previous prime is 23704666949. The next prime is 23704667011. The reversal of 23704666981 is 18966640732.

It can be written as a sum of positive squares in only one way, i.e., 21747400900 + 1957266081 = 147470^2 + 44241^2 .

It is not a de Polignac number, because 23704666981 - 2⁵ = 23704666949 is a prime.

It is a super-2 number, since 2×23704666981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23704663981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1600050 + ... + 1614796.

Almost surely, 2^23704666981 is an apocalyptic number.

It is an amenable number.

23704666981 is a deficient number, since it is larger than the sum of its proper divisors (219096289).

23704666981 is an frugal number, since it uses more digits than its factorization.

23704666981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29603 (or 14856 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 23704666981 in words is "twenty-three billion, seven hundred four million, six hundred sixty-six thousand, nine hundred eighty-one".