14865889920 has 256 divisors, whose sum is σ = 56510023680. Its totient is φ = 3250114560.

The previous prime is 14865889891. The next prime is 14865889931. The reversal of 14865889920 is 2998856841.

It is a super-2 number, since 2×14865889920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285075 + ... + 333165.

It is an arithmetic number, because the mean of its divisors is an integer number (220742280).

Almost surely, 2^14865889920 is an apocalyptic number.

14865889920 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 14865889920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28255011840).

14865889920 is an abundant number, since it is smaller than the sum of its proper divisors (41644133760).

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

14865889920 is a wasteful number, since it uses less digits than its factorization.

14865889920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48143 (or 48131 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 14865889920 in words is "fourteen billion, eight hundred sixty-five million, eight hundred eighty-nine thousand, nine hundred twenty".