78328875814 has 12 divisors (see below), whose sum is σ = 136675895724. Its totient is φ = 33569518164.

The previous prime is 78328875769. The next prime is 78328875817. The reversal of 78328875814 is 41857882387.

It is a happy number.

It is a super-2 number, since 2×78328875814² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78328875817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399637024 + ... + 399637219.

It is an arithmetic number, because the mean of its divisors is an integer number (11389657977).

Almost surely, 2^78328875814 is an apocalyptic number.

78328875814 is a deficient number, since it is larger than the sum of its proper divisors (58347019910).

78328875814 is a wasteful number, since it uses less digits than its factorization.

78328875814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799274259 (or 799274252 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 61.

The spelling of 78328875814 in words is "seventy-eight billion, three hundred twenty-eight million, eight hundred seventy-five thousand, eight hundred fourteen".