78865876965 has 8 divisors (see below), whose sum is σ = 126185403168. Its totient is φ = 42061801040.

The previous prime is 78865876883. The next prime is 78865877033. The reversal of 78865876965 is 56967856887.

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

It is not a de Polignac number, because 78865876965 - 2¹⁹ = 78865352677 is a prime.

It is a super-2 number, since 2×78865876965² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2628862551 + ... + 2628862580.

It is an arithmetic number, because the mean of its divisors is an integer number (15773175396).

Almost surely, 2^78865876965 is an apocalyptic number.

It is an amenable number.

78865876965 is a deficient number, since it is larger than the sum of its proper divisors (47319526203).

78865876965 is a wasteful number, since it uses less digits than its factorization.

78865876965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257725139.

The product of its digits is 1219276800, while the sum is 75.

The spelling of 78865876965 in words is "seventy-eight billion, eight hundred sixty-five million, eight hundred seventy-six thousand, nine hundred sixty-five".