83870454427 has 2 divisors, whose sum is σ = 83870454428. Its totient is φ = 83870454426.

The previous prime is 83870454407. The next prime is 83870454509. The reversal of 83870454427 is 72445407838.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83870454427 - 2¹⁵ = 83870421659 is a prime.

It is not a weakly prime, because it can be changed into another prime (83870454407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41935227213 + 41935227214.

It is an arithmetic number, because the mean of its divisors is an integer number (41935227214).

Almost surely, 2^83870454427 is an apocalyptic number.

83870454427 is a deficient number, since it is larger than the sum of its proper divisors (1).

83870454427 is an equidigital number, since it uses as much as digits as its factorization.

83870454427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6021120, while the sum is 52.

The spelling of 83870454427 in words is "eighty-three billion, eight hundred seventy million, four hundred fifty-four thousand, four hundred twenty-seven".