820969322207 has 4 divisors (see below), whose sum is σ = 869261635296. Its totient is φ = 772677009120.

The previous prime is 820969322161. The next prime is 820969322209. The reversal of 820969322207 is 702223969028.

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 820969322207 - 2⁸ = 820969321951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820969322209) 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, 24146156519 + ... + 24146156552.

It is an arithmetic number, because the mean of its divisors is an integer number (217315408824).

Almost surely, 2^820969322207 is an apocalyptic number.

820969322207 is a deficient number, since it is larger than the sum of its proper divisors (48292313089).

820969322207 is a wasteful number, since it uses less digits than its factorization.

820969322207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48292313088.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 820969322207 in words is "eight hundred twenty billion, nine hundred sixty-nine million, three hundred twenty-two thousand, two hundred seven".