78203307216 has 40 divisors (see below), whose sum is σ = 210808918080. Its totient is φ = 24934387456.

The previous prime is 78203307187. The next prime is 78203307269. The reversal of 78203307216 is 61270330287.

It is a super-2 number, since 2×78203307216² (a number of 23 digits) contains 22 as substring.

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, 35417061 + ... + 35419268.

It is an arithmetic number, because the mean of its divisors is an integer number (5270222952).

Almost surely, 2^78203307216 is an apocalyptic number.

It is an amenable number.

78203307216 is an abundant number, since it is smaller than the sum of its proper divisors (132605610864).

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

78203307216 is a wasteful number, since it uses less digits than its factorization.

78203307216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70836363 (or 70836357 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 78203307216 in words is "seventy-eight billion, two hundred three million, three hundred seven thousand, two hundred sixteen".