78761880305 has 16 divisors (see below), whose sum is σ = 96722398080. Its totient is φ = 61537717248.

The previous prime is 78761880251. The next prime is 78761880313. The reversal of 78761880305 is 50308816787.

It is a cyclic number.

It is not a de Polignac number, because 78761880305 - 2²² = 78757686001 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801404 + ... + 3822066.

It is an arithmetic number, because the mean of its divisors is an integer number (6045149880).

Almost surely, 2^78761880305 is an apocalyptic number.

It is an amenable number.

78761880305 is a deficient number, since it is larger than the sum of its proper divisors (17960517775).

78761880305 is a wasteful number, since it uses less digits than its factorization.

78761880305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38440.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 78761880305 in words is "seventy-eight billion, seven hundred sixty-one million, eight hundred eighty thousand, three hundred five".