81296158369603 has 2 divisors, whose sum is σ = 81296158369604. Its totient is φ = 81296158369602.

The previous prime is 81296158369541. The next prime is 81296158369663. The reversal of 81296158369603 is 30696385169218.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81296158369603 is a prime.

It is not a weakly prime, because it can be changed into another prime (81296158369663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40648079184801 + 40648079184802.

It is an arithmetic number, because the mean of its divisors is an integer number (40648079184802).

Almost surely, 2^{81296158369603} is an apocalyptic number.

81296158369603 is a deficient number, since it is larger than the sum of its proper divisors (1).

81296158369603 is an equidigital number, since it uses as much as digits as its factorization.

81296158369603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100776960, while the sum is 67.

The spelling of 81296158369603 in words is "eighty-one trillion, two hundred ninety-six billion, one hundred fifty-eight million, three hundred sixty-nine thousand, six hundred three".