79747650973 has 2 divisors, whose sum is σ = 79747650974. Its totient is φ = 79747650972.

The previous prime is 79747650859. The next prime is 79747650977. The reversal of 79747650973 is 37905674797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67320529444 + 12427121529 = 259462^2 + 111477^2 .

It is a cyclic number.

It is not a de Polignac number, because 79747650973 - 2⁹ = 79747650461 is a prime.

It is a super-2 number, since 2×79747650973² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79747650977) 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, 39873825486 + 39873825487.

It is an arithmetic number, because the mean of its divisors is an integer number (39873825487).

Almost surely, 2^79747650973 is an apocalyptic number.

It is an amenable number.

79747650973 is a deficient number, since it is larger than the sum of its proper divisors (1).

79747650973 is an equidigital number, since it uses as much as digits as its factorization.

79747650973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70013160, while the sum is 64.

The spelling of 79747650973 in words is "seventy-nine billion, seven hundred forty-seven million, six hundred fifty thousand, nine hundred seventy-three".