66666292086 has 32 divisors (see below), whose sum is σ = 139257146880. Its totient is φ = 21255029856.

The previous prime is 66666292067. The next prime is 66666292151. The reversal of 66666292086 is 68029266666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2531806 + ... + 2558001.

It is an arithmetic number, because the mean of its divisors is an integer number (4351785840).

Almost surely, 2^66666292086 is an apocalyptic number.

66666292086 is an abundant number, since it is smaller than the sum of its proper divisors (72590854794).

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

66666292086 is a wasteful number, since it uses less digits than its factorization.

66666292086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089908.

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 66666292086 in words is "sixty-six billion, six hundred sixty-six million, two hundred ninety-two thousand, eighty-six".