78612102811 has 16 divisors (see below), whose sum is σ = 86871283200. Its totient is φ = 70538925600.

The previous prime is 78612102809. The next prime is 78612102823. The reversal of 78612102811 is 11820121687.

It is not a de Polignac number, because 78612102811 - 2¹ = 78612102809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78612102011) 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, 3195225 + ... + 3219733.

It is an arithmetic number, because the mean of its divisors is an integer number (5429455200).

Almost surely, 2^78612102811 is an apocalyptic number.

78612102811 is a deficient number, since it is larger than the sum of its proper divisors (8259180389).

78612102811 is a wasteful number, since it uses less digits than its factorization.

78612102811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28290.

The product of its (nonzero) digits is 10752, while the sum is 37.

The spelling of 78612102811 in words is "seventy-eight billion, six hundred twelve million, one hundred two thousand, eight hundred eleven".