6918686848890 has 64 divisors (see below), whose sum is σ = 18486511545600. Its totient is φ = 1841315164992.

The previous prime is 6918686848789. The next prime is 6918686848891. The reversal of 6918686848890 is 988486868196.

6918686848890 is a `hidden beast` number, since 6 + 9 + 18 + 68 + 68 + 488 + 9 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (6918686848891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25336125 + ... + 25607744.

It is an arithmetic number, because the mean of its divisors is an integer number (288851742900).

Almost surely, 2^{6918686848890} is an apocalyptic number.

6918686848890 is an abundant number, since it is smaller than the sum of its proper divisors (11567824696710).

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

6918686848890 is a wasteful number, since it uses less digits than its factorization.

6918686848890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50944388 (or 50944382 counting only the distinct ones).

The product of its (nonzero) digits is 2293235712, while the sum is 81.

The spelling of 6918686848890 in words is "six trillion, nine hundred eighteen billion, six hundred eighty-six million, eight hundred forty-eight thousand, eight hundred ninety".