15678085680 has 80 divisors (see below), whose sum is σ = 54002302560. Its totient is φ = 4180822272.

The previous prime is 15678085667. The next prime is 15678085711. The reversal of 15678085680 is 8658087651.

15678085680 is a `hidden beast` number, since 1 + 5 + 6 + 78 + 0 + 8 + 568 + 0 = 666.

15678085680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 3627027 + ... + 3631346.

It is an arithmetic number, because the mean of its divisors is an integer number (675028782).

Almost surely, 2^15678085680 is an apocalyptic number.

15678085680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15678085680 is an abundant number, since it is smaller than the sum of its proper divisors (38324216880).

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

15678085680 is a wasteful number, since it uses less digits than its factorization.

15678085680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258395 (or 7258383 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 15678085680 in words is "fifteen billion, six hundred seventy-eight million, eighty-five thousand, six hundred eighty".