83447278907 has 2 divisors, whose sum is σ = 83447278908. Its totient is φ = 83447278906.

The previous prime is 83447278897. The next prime is 83447278909. The reversal of 83447278907 is 70987274438.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83447278907 - 2⁴ = 83447278891 is a prime.

It is a super-2 number, since 2×83447278907² (a number of 23 digits) contains 22 as substring.

Together with 83447278909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83447278909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41723639453 + 41723639454.

It is an arithmetic number, because the mean of its divisors is an integer number (41723639454).

Almost surely, 2^83447278907 is an apocalyptic number.

83447278907 is a deficient number, since it is larger than the sum of its proper divisors (1).

83447278907 is an equidigital number, since it uses as much as digits as its factorization.

83447278907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 83447278907 in words is "eighty-three billion, four hundred forty-seven million, two hundred seventy-eight thousand, nine hundred seven".