6820423864488 has 384 divisors, whose sum is σ = 20735224473600. Its totient is φ = 2011148697600.

The previous prime is 6820423864469. The next prime is 6820423864489. The reversal of 6820423864488 is 8844683240286.

6820423864488 is a `hidden beast` number, since 6 + 8 + 20 + 42 + 38 + 64 + 488 = 666.

It is a super-5 number, since 5×6820423864488⁵ (a number of 65 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (6820423864489) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1361631328 + ... + 1361636336.

It is an arithmetic number, because the mean of its divisors is an integer number (53997980400).

Almost surely, 2^{6820423864488} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6820423864488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10367612236800).

6820423864488 is an abundant number, since it is smaller than the sum of its proper divisors (13914800609112).

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

6820423864488 is a wasteful number, since it uses less digits than its factorization.

6820423864488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513 (or 5506 counting only the distinct ones).

The product of its (nonzero) digits is 113246208, while the sum is 63.

The spelling of 6820423864488 in words is "six trillion, eight hundred twenty billion, four hundred twenty-three million, eight hundred sixty-four thousand, four hundred eighty-eight".