81103526753 has 2 divisors, whose sum is σ = 81103526754. Its totient is φ = 81103526752.

The previous prime is 81103526731. The next prime is 81103526797. The reversal of 81103526753 is 35762530118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71777375569 + 9326151184 = 267913^2 + 96572^2 .

It is a cyclic number.

It is not a de Polignac number, because 81103526753 - 2¹⁸ = 81103264609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81103526753.

It is not a weakly prime, because it can be changed into another prime (81103526653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40551763376 + 40551763377.

It is an arithmetic number, because the mean of its divisors is an integer number (40551763377).

Almost surely, 2^81103526753 is an apocalyptic number.

It is an amenable number.

81103526753 is a deficient number, since it is larger than the sum of its proper divisors (1).

81103526753 is an equidigital number, since it uses as much as digits as its factorization.

81103526753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 81103526753 in words is "eighty-one billion, one hundred three million, five hundred twenty-six thousand, seven hundred fifty-three".