43868657479680 has 1664 divisors, whose sum is σ = 173381426380800. Its totient is φ = 10434222489600.

The previous prime is 43868657479613. The next prime is 43868657479681. The reversal of 43868657479680 is 8697475686834.

43868657479680 is a `hidden beast` number, since 4 + 3 + 8 + 6 + 8 + 65 + 7 + 479 + 6 + 80 = 666.

It is a super-2 number, since 2×43868657479680² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43868657479680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43868657479681) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 84200877820 + ... + 84200878340.

Almost surely, 2^{43868657479680} is an apocalyptic number.

43868657479680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43868657479680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86690713190400).

43868657479680 is an abundant number, since it is smaller than the sum of its proper divisors (129512768901120).

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

43868657479680 is a wasteful number, since it uses less digits than its factorization.

43868657479680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 11705057280, while the sum is 81.

The spelling of 43868657479680 in words is "forty-three trillion, eight hundred sixty-eight billion, six hundred fifty-seven million, four hundred seventy-nine thousand, six hundred eighty".