6681111402 has 32 divisors (see below), whose sum is σ = 15480312192. Its totient is φ = 1882738944.

The previous prime is 6681111361. The next prime is 6681111407. The reversal of 6681111402 is 2041111866.

It is a self number, because there is not a number n which added to its sum of digits gives 6681111402.

It is not an unprimeable number, because it can be changed into a prime (6681111407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086483 + ... + 1092614.

It is an arithmetic number, because the mean of its divisors is an integer number (483759756).

Almost surely, 2^6681111402 is an apocalyptic number.

6681111402 is an abundant number, since it is smaller than the sum of its proper divisors (8799200790).

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

6681111402 is a wasteful number, since it uses less digits than its factorization.

6681111402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179182.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 6681111402 is about 81738.0658077985. The cubic root of 6681111402 is about 1883.4303788421.

The spelling of 6681111402 in words is "six billion, six hundred eighty-one million, one hundred eleven thousand, four hundred two".