966666663333331 has 4 divisors (see below), whose sum is σ = 966700041583464. Its totient is φ = 966633285083200.

The previous prime is 966666663333311. The next prime is 966666663333359. The reversal of 966666663333331 is 133333366666669.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 966666663333331 - 2¹¹ = 966666663331283 is a prime.

It is a super-2 number, since 2×966666663333331² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (966666663333311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16689081625 + ... + 16689139546.

It is an arithmetic number, because the mean of its divisors is an integer number (241675010395866).

Almost surely, 2^{966666663333331} is an apocalyptic number.

966666663333331 is a deficient number, since it is larger than the sum of its proper divisors (33378250133).

966666663333331 is a wasteful number, since it uses less digits than its factorization.

966666663333331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33378250132.

The product of its digits is 1836660096, while the sum is 70.

The spelling of 966666663333331 in words is "nine hundred sixty-six trillion, six hundred sixty-six billion, six hundred sixty-three million, three hundred thirty-three thousand, three hundred thirty-one".