6420107100688 has 40 divisors (see below), whose sum is σ = 13624821627480. Its totient is φ = 2917046630400.

The previous prime is 6420107100683. The next prime is 6420107100691. The reversal of 6420107100688 is 8860017010246.

It can be written as a sum of positive squares in 4 ways, for example, as 542449926144 + 5877657174544 = 736512^2 + 2424388^2 .

It is not an unprimeable number, because it can be changed into a prime (6420107100683) 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, 406946163 + ... + 406961938.

It is an arithmetic number, because the mean of its divisors is an integer number (340620540687).

Almost surely, 2^{6420107100688} is an apocalyptic number.

6420107100688 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6420107100688 is an abundant number, since it is smaller than the sum of its proper divisors (7204714526792).

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

6420107100688 is a wasteful number, since it uses less digits than its factorization.

6420107100688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813908155 (or 813908149 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 6420107100688 in words is "six trillion, four hundred twenty billion, one hundred seven million, one hundred thousand, six hundred eighty-eight".