78892898269 has 2 divisors, whose sum is σ = 78892898270. Its totient is φ = 78892898268.

The previous prime is 78892898267. The next prime is 78892898321. The reversal of 78892898269 is 96289829887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71264972025 + 7627926244 = 266955^2 + 87338^2 .

It is an emirp because it is prime and its reverse (96289829887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78892898269 - 2¹ = 78892898267 is a prime.

It is a super-2 number, since 2×78892898269² (a number of 23 digits) contains 22 as substring.

Together with 78892898267, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 78892898195 and 78892898204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78892898263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39446449134 + 39446449135.

It is an arithmetic number, because the mean of its divisors is an integer number (39446449135).

Almost surely, 2^78892898269 is an apocalyptic number.

It is an amenable number.

78892898269 is a deficient number, since it is larger than the sum of its proper divisors (1).

78892898269 is an equidigital number, since it uses as much as digits as its factorization.

78892898269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501645312, while the sum is 76.

The spelling of 78892898269 in words is "seventy-eight billion, eight hundred ninety-two million, eight hundred ninety-eight thousand, two hundred sixty-nine".