14155911840 has 480 divisors, whose sum is σ = 53057483136. Its totient is φ = 3171624960.

The previous prime is 14155911799. The next prime is 14155911841. The reversal of 14155911840 is 4811955141.

It is a tau number, because it is divible by the number of its divisors (480).

It is not an unprimeable number, because it can be changed into a prime (14155911841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 81825994 + ... + 81826166.

Almost surely, 2^14155911840 is an apocalyptic number.

14155911840 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 14155911840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26528741568).

14155911840 is an abundant number, since it is smaller than the sum of its proper divisors (38901571296).

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

14155911840 is an equidigital number, since it uses as much as digits as its factorization.

14155911840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 39.

The spelling of 14155911840 in words is "fourteen billion, one hundred fifty-five million, nine hundred eleven thousand, eight hundred forty".