78394603683 has 32 divisors (see below), whose sum is σ = 114566234112. Its totient is φ = 47288170400.

The previous prime is 78394603681. The next prime is 78394603691. The reversal of 78394603683 is 38630649387.

It is a cyclic number.

It is not a de Polignac number, because 78394603683 - 2¹ = 78394603681 is a prime.

It is a super-2 number, since 2×78394603683² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78394603681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11339998 + ... + 11346908.

It is an arithmetic number, because the mean of its divisors is an integer number (3580194816).

Almost surely, 2^78394603683 is an apocalyptic number.

78394603683 is a deficient number, since it is larger than the sum of its proper divisors (36171630429).

78394603683 is a wasteful number, since it uses less digits than its factorization.

78394603683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495.

The product of its (nonzero) digits is 15676416, while the sum is 57.

The spelling of 78394603683 in words is "seventy-eight billion, three hundred ninety-four million, six hundred three thousand, six hundred eighty-three".