78077415986 has 8 divisors (see below), whose sum is σ = 117155029104. Its totient is φ = 39025739620.

The previous prime is 78077415971. The next prime is 78077416019. The reversal of 78077415986 is 68951477087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476660 + ... + 6488703.

It is an arithmetic number, because the mean of its divisors is an integer number (14644378638).

Almost surely, 2^78077415986 is an apocalyptic number.

78077415986 is a deficient number, since it is larger than the sum of its proper divisors (39077613118).

78077415986 is a wasteful number, since it uses less digits than its factorization.

78077415986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12968376.

The product of its (nonzero) digits is 23708160, while the sum is 62.

The spelling of 78077415986 in words is "seventy-eight billion, seventy-seven million, four hundred fifteen thousand, nine hundred eighty-six".