23515040666 has 8 divisors (see below), whose sum is σ = 37985834964. Its totient is φ = 10853095680.

The previous prime is 23515040651. The next prime is 23515040779. The reversal of 23515040666 is 66604051532.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22546524025 + 968516641 = 150155^2 + 31121^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452212295 + ... + 452212346.

Almost surely, 2^23515040666 is an apocalyptic number.

23515040666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23515040666 is a deficient number, since it is larger than the sum of its proper divisors (14470794298).

23515040666 is a wasteful number, since it uses less digits than its factorization.

23515040666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904424656.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 23515040666 in words is "twenty-three billion, five hundred fifteen million, forty thousand, six hundred sixty-six".