78445727676 has 36 divisors (see below), whose sum is σ = 206914820112. Its totient is φ = 25011681024.

The previous prime is 78445727669. The next prime is 78445727677. The reversal of 78445727676 is 67672754487.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78445727677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47369781 + ... + 47371436.

It is an arithmetic number, because the mean of its divisors is an integer number (5747633892).

Almost surely, 2^78445727676 is an apocalyptic number.

It is an amenable number.

78445727676 is an abundant number, since it is smaller than the sum of its proper divisors (128469092436).

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

78445727676 is a wasteful number, since it uses less digits than its factorization.

78445727676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94741250 (or 94741245 counting only the distinct ones).

The product of its digits is 110638080, while the sum is 63.

The spelling of 78445727676 in words is "seventy-eight billion, four hundred forty-five million, seven hundred twenty-seven thousand, six hundred seventy-six".