2178932339317 has 2 divisors, whose sum is σ = 2178932339318. Its totient is φ = 2178932339316.

The previous prime is 2178932339293. The next prime is 2178932339377. The reversal of 2178932339317 is 7139332398712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1524271728996 + 654660610321 = 1234614^2 + 809111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2178932339317 - 2¹⁵ = 2178932306549 is a prime.

It is a super-2 number, since 2×2178932339317² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2178932339377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089466169658 + 1089466169659.

It is an arithmetic number, because the mean of its divisors is an integer number (1089466169659).

Almost surely, 2^{2178932339317} is an apocalyptic number.

It is an amenable number.

2178932339317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2178932339317 is an equidigital number, since it uses as much as digits as its factorization.

2178932339317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 58.

The spelling of 2178932339317 in words is "two trillion, one hundred seventy-eight billion, nine hundred thirty-two million, three hundred thirty-nine thousand, three hundred seventeen".