820966669028 has 12 divisors (see below), whose sum is σ = 1567300004592. Its totient is φ = 373166667720.

The previous prime is 820966669009. The next prime is 820966669099.

820966669028 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9329166650 + ... + 9329166737.

It is an arithmetic number, because the mean of its divisors is an integer number (130608333716).

Almost surely, 2^820966669028 is an apocalyptic number.

It is an amenable number.

820966669028 is a deficient number, since it is larger than the sum of its proper divisors (746333335564).

820966669028 is a wasteful number, since it uses less digits than its factorization.

820966669028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18658333402 (or 18658333400 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 820966669028 in words is "eight hundred twenty billion, nine hundred sixty-six million, six hundred sixty-nine thousand, twenty-eight".