83397856447 has 2 divisors, whose sum is σ = 83397856448. Its totient is φ = 83397856446.

The previous prime is 83397856429. The next prime is 83397856453. The reversal of 83397856447 is 74465879338.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83397856447 - 2¹¹ = 83397854399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83397854447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41698928223 + 41698928224.

It is an arithmetic number, because the mean of its divisors is an integer number (41698928224).

Almost surely, 2^83397856447 is an apocalyptic number.

83397856447 is a deficient number, since it is larger than the sum of its proper divisors (1).

83397856447 is an equidigital number, since it uses as much as digits as its factorization.

83397856447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 64.

The spelling of 83397856447 in words is "eighty-three billion, three hundred ninety-seven million, eight hundred fifty-six thousand, four hundred forty-seven".