78309464116 has 12 divisors (see below), whose sum is σ = 147583220932. Its totient is φ = 36142829568.

The previous prime is 78309464059. The next prime is 78309464143. The reversal of 78309464116 is 61146490387.

It can be written as a sum of positive squares in 2 ways, for example, as 33536596900 + 44772867216 = 183130^2 + 211596^2 .

It is a super-2 number, since 2×78309464116² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78309464116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752975565 + ... + 752975668.

Almost surely, 2^78309464116 is an apocalyptic number.

It is an amenable number.

78309464116 is a deficient number, since it is larger than the sum of its proper divisors (69273756816).

78309464116 is a wasteful number, since it uses less digits than its factorization.

78309464116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505951250 (or 1505951248 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 78309464116 in words is "seventy-eight billion, three hundred nine million, four hundred sixty-four thousand, one hundred sixteen".