17879883817 has 2 divisors, whose sum is σ = 17879883818. Its totient is φ = 17879883816.

The previous prime is 17879883799. The next prime is 17879883883. The reversal of 17879883817 is 71838897871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15006495001 + 2873388816 = 122501^2 + 53604^2 .

It is a cyclic number.

It is not a de Polignac number, because 17879883817 - 2¹⁵ = 17879851049 is a prime.

It is a super-3 number, since 3×17879883817³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (17879283817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8939941908 + 8939941909.

It is an arithmetic number, because the mean of its divisors is an integer number (8939941909).

Almost surely, 2^17879883817 is an apocalyptic number.

It is an amenable number.

17879883817 is a deficient number, since it is larger than the sum of its proper divisors (1).

17879883817 is an equidigital number, since it uses as much as digits as its factorization.

17879883817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37933056, while the sum is 67.

The spelling of 17879883817 in words is "seventeen billion, eight hundred seventy-nine million, eight hundred eighty-three thousand, eight hundred seventeen".