78385943308 has 6 divisors (see below), whose sum is σ = 137175400796. Its totient is φ = 39192971652.

The previous prime is 78385943303. The next prime is 78385943323. The reversal of 78385943308 is 80334958387.

It is a super-2 number, since 2×78385943308² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78385943303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9798242910 + ... + 9798242917.

Almost surely, 2^78385943308 is an apocalyptic number.

It is an amenable number.

78385943308 is a deficient number, since it is larger than the sum of its proper divisors (58789457488).

78385943308 is a wasteful number, since it uses less digits than its factorization.

78385943308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19596485831 (or 19596485829 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 78385943308 in words is "seventy-eight billion, three hundred eighty-five million, nine hundred forty-three thousand, three hundred eight".