79047725089 has 2 divisors, whose sum is σ = 79047725090. Its totient is φ = 79047725088.

The previous prime is 79047725059. The next prime is 79047725101. The reversal of 79047725089 is 98052774097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78857064225 + 190660864 = 280815^2 + 13808^2 .

It is a cyclic number.

It is not a de Polignac number, because 79047725089 - 2¹⁹ = 79047200801 is a prime.

It is a super-2 number, since 2×79047725089² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79047725059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39523862544 + 39523862545.

It is an arithmetic number, because the mean of its divisors is an integer number (39523862545).

Almost surely, 2^79047725089 is an apocalyptic number.

It is an amenable number.

79047725089 is a deficient number, since it is larger than the sum of its proper divisors (1).

79047725089 is an equidigital number, since it uses as much as digits as its factorization.

79047725089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 79047725089 in words is "seventy-nine billion, forty-seven million, seven hundred twenty-five thousand, eighty-nine".