81748083763 has 2 divisors, whose sum is σ = 81748083764. Its totient is φ = 81748083762.

The previous prime is 81748083727. The next prime is 81748083779. The reversal of 81748083763 is 36738084718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81748083763 - 2¹³ = 81748075571 is a prime.

It is not a weakly prime, because it can be changed into another prime (81748081763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40874041881 + 40874041882.

It is an arithmetic number, because the mean of its divisors is an integer number (40874041882).

Almost surely, 2^81748083763 is an apocalyptic number.

81748083763 is a deficient number, since it is larger than the sum of its proper divisors (1).

81748083763 is an equidigital number, since it uses as much as digits as its factorization.

81748083763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 81748083763 in words is "eighty-one billion, seven hundred forty-eight million, eighty-three thousand, seven hundred sixty-three".