78613003305 has 40 divisors (see below), whose sum is σ = 144729793032. Its totient is φ = 40793766912.

The previous prime is 78613003283. The next prime is 78613003307. The reversal of 78613003305 is 50330031687.

78613003305 is a `hidden beast` number, since 7 + 8 + 613 + 0 + 0 + 3 + 30 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 26466083856 + 52146919449 = 162684^2 + 228357^2 .

It is not a de Polignac number, because 78613003305 - 2¹² = 78612999209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78613003305.

It is not an unprimeable number, because it can be changed into a prime (78613003307) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2608072 + ... + 2638041.

Almost surely, 2^78613003305 is an apocalyptic number.

It is an amenable number.

78613003305 is a deficient number, since it is larger than the sum of its proper divisors (66116789727).

78613003305 is a wasteful number, since it uses less digits than its factorization.

78613003305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246167 (or 5246158 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 78613003305 in words is "seventy-eight billion, six hundred thirteen million, three thousand, three hundred five".