81894327083 has 2 divisors, whose sum is σ = 81894327084. Its totient is φ = 81894327082.

The previous prime is 81894327043. The next prime is 81894327127. The reversal of 81894327083 is 38072349818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81894327083 - 2⁸ = 81894326827 is a prime.

It is not a weakly prime, because it can be changed into another prime (81894327013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40947163541 + 40947163542.

It is an arithmetic number, because the mean of its divisors is an integer number (40947163542).

Almost surely, 2^81894327083 is an apocalyptic number.

81894327083 is a deficient number, since it is larger than the sum of its proper divisors (1).

81894327083 is an equidigital number, since it uses as much as digits as its factorization.

81894327083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 81894327083 in words is "eighty-one billion, eight hundred ninety-four million, three hundred twenty-seven thousand, eighty-three".