78820203768 has 64 divisors (see below), whose sum is σ = 204059930400. Its totient is φ = 25355066880.

The previous prime is 78820203739. The next prime is 78820203773. The reversal of 78820203768 is 86730202887.

It is a self number, because there is not a number n which added to its sum of digits gives 78820203768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430323 + ... + 585506.

Almost surely, 2^78820203768 is an apocalyptic number.

It is an amenable number.

78820203768 is an abundant number, since it is smaller than the sum of its proper divisors (125239726632).

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

78820203768 is a wasteful number, since it uses less digits than its factorization.

78820203768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015952 (or 1015948 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 78820203768 in words is "seventy-eight billion, eight hundred twenty million, two hundred three thousand, seven hundred sixty-eight".