81748084753 has 2 divisors, whose sum is σ = 81748084754. Its totient is φ = 81748084752.

The previous prime is 81748084727. The next prime is 81748084771. The reversal of 81748084753 is 35748084718.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62514000784 + 19234083969 = 250028^2 + 138687^2 .

It is a cyclic number.

It is not a de Polignac number, because 81748084753 - 2¹³ = 81748076561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81748084694 and 81748084703.

It is not a weakly prime, because it can be changed into another prime (81748084553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40874042376 + 40874042377.

It is an arithmetic number, because the mean of its divisors is an integer number (40874042377).

Almost surely, 2^81748084753 is an apocalyptic number.

It is an amenable number.

81748084753 is a deficient number, since it is larger than the sum of its proper divisors (1).

81748084753 is an equidigital number, since it uses as much as digits as its factorization.

81748084753 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 55.

The spelling of 81748084753 in words is "eighty-one billion, seven hundred forty-eight million, eighty-four thousand, seven hundred fifty-three".