78855471738836 has 96 divisors (see below), whose sum is σ = 161082922468608. Its totient is φ = 33448377231360.

The previous prime is 78855471738811. The next prime is 78855471738851. The reversal of 78855471738836 is 63883717455887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5897441 + ... + 13874103.

It is an arithmetic number, because the mean of its divisors is an integer number (1677947109048).

Almost surely, 2^{78855471738836} is an apocalyptic number.

It is an amenable number.

78855471738836 is an abundant number, since it is smaller than the sum of its proper divisors (82227450729772).

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

78855471738836 is a wasteful number, since it uses less digits than its factorization.

78855471738836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976961 (or 7976959 counting only the distinct ones).

The product of its digits is 7586611200, while the sum is 80.

The spelling of 78855471738836 in words is "seventy-eight trillion, eight hundred fifty-five billion, four hundred seventy-one million, seven hundred thirty-eight thousand, eight hundred thirty-six".