83140921579 has 2 divisors, whose sum is σ = 83140921580. Its totient is φ = 83140921578.

The previous prime is 83140921573. The next prime is 83140921607. The reversal of 83140921579 is 97512904138.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83140921579 - 2¹⁵ = 83140888811 is a prime.

It is not a weakly prime, because it can be changed into another prime (83140921573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41570460789 + 41570460790.

It is an arithmetic number, because the mean of its divisors is an integer number (41570460790).

Almost surely, 2^83140921579 is an apocalyptic number.

83140921579 is a deficient number, since it is larger than the sum of its proper divisors (1).

83140921579 is an equidigital number, since it uses as much as digits as its factorization.

83140921579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 83140921579 in words is "eighty-three billion, one hundred forty million, nine hundred twenty-one thousand, five hundred seventy-nine".