83194769821 has 8 divisors (see below), whose sum is σ = 83995702560. Its totient is φ = 82394522352.

The previous prime is 83194769803. The next prime is 83194769837. The reversal of 83194769821 is 12896749138.

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 83194769821 - 2⁵ = 83194769789 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 (83194769851) 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, 74346 + ... + 414628.

It is an arithmetic number, because the mean of its divisors is an integer number (10499462820).

Almost surely, 2^83194769821 is an apocalyptic number.

It is an amenable number.

83194769821 is a deficient number, since it is larger than the sum of its proper divisors (800932739).

83194769821 is a wasteful number, since it uses less digits than its factorization.

83194769821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342635.

The product of its digits is 5225472, while the sum is 58.

The spelling of 83194769821 in words is "eighty-three billion, one hundred ninety-four million, seven hundred sixty-nine thousand, eight hundred twenty-one".