79260077240081 has 2 divisors, whose sum is σ = 79260077240082. Its totient is φ = 79260077240080.

The previous prime is 79260077239957. The next prime is 79260077240107. The reversal of 79260077240081 is 18004277006297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76069638247681 + 3190438992400 = 8721791^2 + 1786180^2 .

It is a cyclic number.

It is not a de Polignac number, because 79260077240081 - 2¹⁸ = 79260076977937 is a prime.

It is a super-2 number, since 2×79260077240081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79260077248081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39630038620040 + 39630038620041.

It is an arithmetic number, because the mean of its divisors is an integer number (39630038620041).

Almost surely, 2^{79260077240081} is an apocalyptic number.

It is an amenable number.

79260077240081 is a deficient number, since it is larger than the sum of its proper divisors (1).

79260077240081 is an equidigital number, since it uses as much as digits as its factorization.

79260077240081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 79260077240081 in words is "seventy-nine trillion, two hundred sixty billion, seventy-seven million, two hundred forty thousand, eighty-one".