6978028161 has 8 divisors (see below), whose sum is σ = 10019732800. Its totient is φ = 4294171152.

The previous prime is 6978028153. The next prime is 6978028181. The reversal of 6978028161 is 1618208796.

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

It is not a de Polignac number, because 6978028161 - 2³ = 6978028153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6978028161.

It is not an unprimeable number, because it can be changed into a prime (6978028151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89461861 + ... + 89461938.

It is an arithmetic number, because the mean of its divisors is an integer number (1252466600).

Almost surely, 2^6978028161 is an apocalyptic number.

It is an amenable number.

6978028161 is a deficient number, since it is larger than the sum of its proper divisors (3041704639).

6978028161 is a wasteful number, since it uses less digits than its factorization.

6978028161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178923815.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 6978028161 is about 83534.5926009100. The cubic root of 6978028161 is about 1910.9276271285.

The spelling of 6978028161 in words is "six billion, nine hundred seventy-eight million, twenty-eight thousand, one hundred sixty-one".