79323251549 has 2 divisors, whose sum is σ = 79323251550. Its totient is φ = 79323251548.

The previous prime is 79323251543. The next prime is 79323251561. The reversal of 79323251549 is 94515232397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79250695225 + 72556324 = 281515^2 + 8518^2 .

It is an emirp because it is prime and its reverse (94515232397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79323251549 - 2¹² = 79323247453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79323251497 and 79323251506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79323251543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39661625774 + 39661625775.

It is an arithmetic number, because the mean of its divisors is an integer number (39661625775).

Almost surely, 2^79323251549 is an apocalyptic number.

It is an amenable number.

79323251549 is a deficient number, since it is larger than the sum of its proper divisors (1).

79323251549 is an equidigital number, since it uses as much as digits as its factorization.

79323251549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 50.

The spelling of 79323251549 in words is "seventy-nine billion, three hundred twenty-three million, two hundred fifty-one thousand, five hundred forty-nine".