78583912867 has 8 divisors (see below), whose sum is σ = 79424096400. Its totient is φ = 77748187104.

The previous prime is 78583912837. The next prime is 78583912877. The reversal of 78583912867 is 76821938587.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78583912867 - 2¹¹ = 78583910819 is a prime.

It is a super-2 number, since 2×78583912867² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78583912799 and 78583912808.

It is not an unprimeable number, because it can be changed into a prime (78583912817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078992 + ... + 1149517.

It is an arithmetic number, because the mean of its divisors is an integer number (9928012050).

Almost surely, 2^78583912867 is an apocalyptic number.

78583912867 is a deficient number, since it is larger than the sum of its proper divisors (840183533).

78583912867 is a wasteful number, since it uses less digits than its factorization.

78583912867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228885.

The product of its digits is 40642560, while the sum is 64.

The spelling of 78583912867 in words is "seventy-eight billion, five hundred eighty-three million, nine hundred twelve thousand, eight hundred sixty-seven".