83826220391 has 2 divisors, whose sum is σ = 83826220392. Its totient is φ = 83826220390.

The previous prime is 83826220381. The next prime is 83826220393. The reversal of 83826220391 is 19302262838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83826220391 - 2²² = 83822026087 is a prime.

Together with 83826220393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83826220393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41913110195 + 41913110196.

It is an arithmetic number, because the mean of its divisors is an integer number (41913110196).

Almost surely, 2^83826220391 is an apocalyptic number.

83826220391 is a deficient number, since it is larger than the sum of its proper divisors (1).

83826220391 is an equidigital number, since it uses as much as digits as its factorization.

83826220391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 83826220391 in words is "eighty-three billion, eight hundred twenty-six million, two hundred twenty thousand, three hundred ninety-one".