79702409573 has 2 divisors, whose sum is σ = 79702409574. Its totient is φ = 79702409572.

The previous prime is 79702409537. The next prime is 79702409621. The reversal of 79702409573 is 37590420797.

Together with previous prime (79702409537) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48985640929 + 30716768644 = 221327^2 + 175262^2 .

It is an emirp because it is prime and its reverse (37590420797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79702409573 - 2⁸ = 79702409317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79702409513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39851204786 + 39851204787.

It is an arithmetic number, because the mean of its divisors is an integer number (39851204787).

Almost surely, 2^79702409573 is an apocalyptic number.

It is an amenable number.

79702409573 is a deficient number, since it is larger than the sum of its proper divisors (1).

79702409573 is an equidigital number, since it uses as much as digits as its factorization.

79702409573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3333960, while the sum is 53.

The spelling of 79702409573 in words is "seventy-nine billion, seven hundred two million, four hundred nine thousand, five hundred seventy-three".