78116873 has 4 divisors (see below), whose sum is σ = 78135168. Its totient is φ = 78098580.

The previous prime is 78116837. The next prime is 78116881. The reversal of 78116873 is 37861187.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78116873 - 2⁸ = 78116617 is a prime.

It is a super-2 number, since 2×78116873² = 12204491694596258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78116873.

It is not an unprimeable number, because it can be changed into a prime (78116803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040 + ... + 12542.

It is an arithmetic number, because the mean of its divisors is an integer number (19533792).

Almost surely, 2^78116873 is an apocalyptic number.

It is an amenable number.

78116873 is a deficient number, since it is larger than the sum of its proper divisors (18295).

78116873 is a wasteful number, since it uses less digits than its factorization.

78116873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18294.

The product of its digits is 56448, while the sum is 41.

The square root of 78116873 is about 8838.3750203304. The cubic root of 78116873 is about 427.4791627157.

The spelling of 78116873 in words is "seventy-eight million, one hundred sixteen thousand, eight hundred seventy-three".