79011115501 has 2 divisors, whose sum is σ = 79011115502. Its totient is φ = 79011115500.

The previous prime is 79011115489. The next prime is 79011115517. The reversal of 79011115501 is 10551111097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60501240900 + 18509874601 = 245970^2 + 136051^2 .

It is an emirp because it is prime and its reverse (10551111097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79011115501 - 2¹³ = 79011107309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79011116501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39505557750 + 39505557751.

It is an arithmetic number, because the mean of its divisors is an integer number (39505557751).

Almost surely, 2^79011115501 is an apocalyptic number.

It is an amenable number.

79011115501 is a deficient number, since it is larger than the sum of its proper divisors (1).

79011115501 is an equidigital number, since it uses as much as digits as its factorization.

79011115501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 31.

Adding to 79011115501 its reverse (10551111097), we get a palindrome (89562226598).

The spelling of 79011115501 in words is "seventy-nine billion, eleven million, one hundred fifteen thousand, five hundred one".