78611668046 has 16 divisors (see below), whose sum is σ = 121990263840. Its totient is φ = 37948394400.

The previous prime is 78611668033. The next prime is 78611668063. The reversal of 78611668046 is 64086611687.

It is a Curzon number.

It is a congruent 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, 1980596 + ... + 2019896.

It is an arithmetic number, because the mean of its divisors is an integer number (7624391490).

Almost surely, 2^78611668046 is an apocalyptic number.

78611668046 is a deficient number, since it is larger than the sum of its proper divisors (43378595794).

78611668046 is a wasteful number, since it uses less digits than its factorization.

78611668046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73819.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 78611668046 in words is "seventy-eight billion, six hundred eleven million, six hundred sixty-eight thousand, forty-six".