6989864265648 has 240 divisors, whose sum is σ = 21434181758496. Its totient is φ = 2108831477760.

The previous prime is 6989864265589. The next prime is 6989864265649. The reversal of 6989864265648 is 8465624689896.

6989864265648 is a `hidden beast` number, since 6 + 9 + 8 + 9 + 8 + 6 + 42 + 6 + 564 + 8 = 666.

It is a super-3 number, since 3×6989864265648³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6989864265649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 628748986 + ... + 628760102.

Almost surely, 2^{6989864265648} 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 6989864265648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10717090879248).

6989864265648 is an abundant number, since it is smaller than the sum of its proper divisors (14444317492848).

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

6989864265648 is a wasteful number, since it uses less digits than its factorization.

6989864265648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12852 (or 12843 counting only the distinct ones).

The product of its digits is 8599633920, while the sum is 81.

The spelling of 6989864265648 in words is "six trillion, nine hundred eighty-nine billion, eight hundred sixty-four million, two hundred sixty-five thousand, six hundred forty-eight".