78671303985 has 32 divisors (see below), whose sum is σ = 127846591488. Its totient is φ = 41302376640.

The previous prime is 78671303959. The next prime is 78671303999. The reversal of 78671303985 is 58930317687.

It is not a de Polignac number, because 78671303985 - 2¹³ = 78671295793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627354 + ... + 742236.

It is an arithmetic number, because the mean of its divisors is an integer number (3995205984).

Almost surely, 2^78671303985 is an apocalyptic number.

It is an amenable number.

78671303985 is a deficient number, since it is larger than the sum of its proper divisors (49175287503).

78671303985 is a wasteful number, since it uses less digits than its factorization.

78671303985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115605.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 78671303985 in words is "seventy-eight billion, six hundred seventy-one million, three hundred three thousand, nine hundred eighty-five".