78352383871 has 4 divisors (see below), whose sum is σ = 79425704272. Its totient is φ = 77279063472.

The previous prime is 78352383853. The next prime is 78352383881. The reversal of 78352383871 is 17838325387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78352383871 - 2⁵ = 78352383839 is a prime.

It is a super-2 number, since 2×78352383871² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78352383841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536660091 + ... + 536660236.

It is an arithmetic number, because the mean of its divisors is an integer number (19856426068).

Almost surely, 2^78352383871 is an apocalyptic number.

78352383871 is a deficient number, since it is larger than the sum of its proper divisors (1073320401).

78352383871 is a wasteful number, since it uses less digits than its factorization.

78352383871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073320400.

The product of its digits is 6773760, while the sum is 55.

The spelling of 78352383871 in words is "seventy-eight billion, three hundred fifty-two million, three hundred eighty-three thousand, eight hundred seventy-one".