153216666 has 24 divisors (see below), whose sum is σ = 332201844. Its totient is φ = 51036480.

The previous prime is 153216659. The next prime is 153216671. The reversal of 153216666 is 666612351.

It can be written as a sum of positive squares in 2 ways, for example, as 148718025 + 4498641 = 12195^2 + 2121^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 153216666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40996 + ... + 44576.

Almost surely, 2^153216666 is an apocalyptic number.

153216666 is an abundant number, since it is smaller than the sum of its proper divisors (178985178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153216666 is a wasteful number, since it uses less digits than its factorization.

153216666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966 (or 5963 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 153216666 is about 12378.0719823404. The cubic root of 153216666 is about 535.1004743312.

The spelling of 153216666 in words is "one hundred fifty-three million, two hundred sixteen thousand, six hundred sixty-six".