81081204283 has 2 divisors, whose sum is σ = 81081204284. Its totient is φ = 81081204282.

The previous prime is 81081204271. The next prime is 81081204299. The reversal of 81081204283 is 38240218018.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81081204283 is a prime.

It is not a weakly prime, because it can be changed into another prime (81081204223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40540602141 + 40540602142.

It is an arithmetic number, because the mean of its divisors is an integer number (40540602142).

Almost surely, 2^81081204283 is an apocalyptic number.

81081204283 is a deficient number, since it is larger than the sum of its proper divisors (1).

81081204283 is an equidigital number, since it uses as much as digits as its factorization.

81081204283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 81081204283 in words is "eighty-one billion, eighty-one million, two hundred four thousand, two hundred eighty-three".