81064248119 has 2 divisors, whose sum is σ = 81064248120. Its totient is φ = 81064248118.

The previous prime is 81064248091. The next prime is 81064248127. The reversal of 81064248119 is 91184246018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81064248119 - 2⁸ = 81064247863 is a prime.

It is a super-2 number, since 2×81064248119² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81064248119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81064241119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40532124059 + 40532124060.

It is an arithmetic number, because the mean of its divisors is an integer number (40532124060).

Almost surely, 2^81064248119 is an apocalyptic number.

81064248119 is a deficient number, since it is larger than the sum of its proper divisors (1).

81064248119 is an equidigital number, since it uses as much as digits as its factorization.

81064248119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 81064248119 in words is "eighty-one billion, sixty-four million, two hundred forty-eight thousand, one hundred nineteen".