14009978565840 has 320 divisors, whose sum is σ = 44823017143296. Its totient is φ = 3618737995776.

The previous prime is 14009978565811. The next prime is 14009978565851. The reversal of 14009978565840 is 4856587990041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 206715799 + ... + 206783561.

Almost surely, 2^{14009978565840} is an apocalyptic number.

14009978565840 is a gapful number since it is divisible by the number (10) 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 14009978565840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22411508571648).

14009978565840 is an abundant number, since it is smaller than the sum of its proper divisors (30813038577456).

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

14009978565840 is a wasteful number, since it uses less digits than its factorization.

14009978565840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68066 (or 68060 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 66.

The spelling of 14009978565840 in words is "fourteen trillion, nine billion, nine hundred seventy-eight million, five hundred sixty-five thousand, eight hundred forty".