6981478160 has 40 divisors (see below), whose sum is σ = 16258274880. Its totient is φ = 2788060032.

The previous prime is 6981478129. The next prime is 6981478187. The reversal of 6981478160 is 618741896.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 6981478099 and 6981478108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20972 + ... + 120011.

It is an arithmetic number, because the mean of its divisors is an integer number (406456872).

Almost surely, 2^6981478160 is an apocalyptic number.

It is an amenable number.

6981478160 is an abundant number, since it is smaller than the sum of its proper divisors (9276796720).

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

6981478160 is a wasteful number, since it uses less digits than its factorization.

6981478160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141615 (or 141609 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 6981478160 is about 83555.2401707996. The cubic root of 6981478160 is about 1911.2425017632.

The spelling of 6981478160 in words is "six billion, nine hundred eighty-one million, four hundred seventy-eight thousand, one hundred sixty".