83479384381 has 2 divisors, whose sum is σ = 83479384382. Its totient is φ = 83479384380.

The previous prime is 83479384301. The next prime is 83479384397. The reversal of 83479384381 is 18348397438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81610205625 + 1869178756 = 285675^2 + 43234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83479384381 is a prime.

It is a super-2 number, since 2×83479384381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83479384301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41739692190 + 41739692191.

It is an arithmetic number, because the mean of its divisors is an integer number (41739692191).

Almost surely, 2^83479384381 is an apocalyptic number.

It is an amenable number.

83479384381 is a deficient number, since it is larger than the sum of its proper divisors (1).

83479384381 is an equidigital number, since it uses as much as digits as its factorization.

83479384381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 58.

The spelling of 83479384381 in words is "eighty-three billion, four hundred seventy-nine million, three hundred eighty-four thousand, three hundred eighty-one".