81234700363 has 2 divisors, whose sum is σ = 81234700364. Its totient is φ = 81234700362.

The previous prime is 81234700361. The next prime is 81234700367. The reversal of 81234700363 is 36300743218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81234700363 - 2¹ = 81234700361 is a prime.

Together with 81234700361, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (81234700361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40617350181 + 40617350182.

It is an arithmetic number, because the mean of its divisors is an integer number (40617350182).

Almost surely, 2^81234700363 is an apocalyptic number.

81234700363 is a deficient number, since it is larger than the sum of its proper divisors (1).

81234700363 is an equidigital number, since it uses as much as digits as its factorization.

81234700363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 81234700363 in words is "eighty-one billion, two hundred thirty-four million, seven hundred thousand, three hundred sixty-three".