83922561391 has 8 divisors (see below), whose sum is σ = 87574793184. Its totient is φ = 80270615040.

The previous prime is 83922561379. The next prime is 83922561409. The reversal of 83922561391 is 19316522938.

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 83922561391 - 2²⁷ = 83788343663 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 (83922561341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713011 + ... + 822331.

It is an arithmetic number, because the mean of its divisors is an integer number (10946849148).

Almost surely, 2^83922561391 is an apocalyptic number.

83922561391 is a deficient number, since it is larger than the sum of its proper divisors (3652231793).

83922561391 is a wasteful number, since it uses less digits than its factorization.

83922561391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142721.

The product of its digits is 699840, while the sum is 49.

The spelling of 83922561391 in words is "eighty-three billion, nine hundred twenty-two million, five hundred sixty-one thousand, three hundred ninety-one".