6488947326940 has 48 divisors (see below), whose sum is σ = 14773494002400. Its totient is φ = 2379839005440.

The previous prime is 6488947326913. The next prime is 6488947326941. The reversal of 6488947326940 is 496237498846.

It is a self number, because there is not a number n which added to its sum of digits gives 6488947326940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6488947326941) 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, 83711226 + ... + 83788705.

It is an arithmetic number, because the mean of its divisors is an integer number (307781125050).

Almost surely, 2^{6488947326940} is an apocalyptic number.

It is an amenable number.

6488947326940 is an abundant number, since it is smaller than the sum of its proper divisors (8284546675460).

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

6488947326940 is a wasteful number, since it uses less digits than its factorization.

6488947326940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167500102 (or 167500100 counting only the distinct ones).

The product of its (nonzero) digits is 501645312, while the sum is 70.

The spelling of 6488947326940 in words is "six trillion, four hundred eighty-eight billion, nine hundred forty-seven million, three hundred twenty-six thousand, nine hundred forty".