23664666890 has 8 divisors (see below), whose sum is σ = 42596400420. Its totient is φ = 9465866752.

The previous prime is 23664666889. The next prime is 23664666911. The reversal of 23664666890 is 9866646632.

It can be written as a sum of positive squares in 2 ways, for example, as 23021689441 + 642977449 = 151729^2 + 25357^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183233335 + ... + 1183233354.

Almost surely, 2^23664666890 is an apocalyptic number.

23664666890 is a deficient number, since it is larger than the sum of its proper divisors (18931733530).

23664666890 is a wasteful number, since it uses less digits than its factorization.

23664666890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366466696.

The product of its (nonzero) digits is 13436928, while the sum is 56.

The spelling of 23664666890 in words is "twenty-three billion, six hundred sixty-four million, six hundred sixty-six thousand, eight hundred ninety".