78466165665612 has 48 divisors (see below), whose sum is σ = 194652735863040. Its totient is φ = 24546156276928.

The previous prime is 78466165665571. The next prime is 78466165665617. The reversal of 78466165665612 is 21656656166487.

It is a super-3 number, since 3×78466165665612³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (78466165665617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2682039162 + ... + 2682068417.

It is an arithmetic number, because the mean of its divisors is an integer number (4055265330480).

Almost surely, 2^{78466165665612} is an apocalyptic number.

It is an amenable number.

78466165665612 is an abundant number, since it is smaller than the sum of its proper divisors (116186570197428).

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

78466165665612 is a wasteful number, since it uses less digits than its factorization.

78466165665612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364107662 (or 5364107660 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 69.

The spelling of 78466165665612 in words is "seventy-eight trillion, four hundred sixty-six billion, one hundred sixty-five million, six hundred sixty-five thousand, six hundred twelve".