78665010810 has 16 divisors (see below), whose sum is σ = 188796026016. Its totient is φ = 20977336208.

The previous prime is 78665010797. The next prime is 78665010883. The reversal of 78665010810 is 1801056687.

It is a super-2 number, since 2×78665010810² (a number of 23 digits) contains 22 as substring.

It is a Curzon 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, 1311083484 + ... + 1311083543.

It is an arithmetic number, because the mean of its divisors is an integer number (11799751626).

Almost surely, 2^78665010810 is an apocalyptic number.

78665010810 is an abundant number, since it is smaller than the sum of its proper divisors (110131015206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78665010810 is a wasteful number, since it uses less digits than its factorization.

78665010810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622167037.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 78665010810 in words is "seventy-eight billion, six hundred sixty-five million, ten thousand, eight hundred ten".