83666291969 has 8 divisors (see below), whose sum is σ = 94844379840. Its totient is φ = 73165664016.

The previous prime is 83666291963. The next prime is 83666291971. The reversal of 83666291969 is 96919266638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83666291969 - 2³² = 79371324673 is a prime.

It is a super-2 number, since 2×83666291969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83666291963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169364717 + ... + 169365210.

It is an arithmetic number, because the mean of its divisors is an integer number (11855547480).

Almost surely, 2^83666291969 is an apocalyptic number.

It is an amenable number.

83666291969 is a deficient number, since it is larger than the sum of its proper divisors (11178087871).

83666291969 is a wasteful number, since it uses less digits than its factorization.

83666291969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338729959.

The product of its digits is 45349632, while the sum is 65.

The spelling of 83666291969 in words is "eighty-three billion, six hundred sixty-six million, two hundred ninety-one thousand, nine hundred sixty-nine".