14999638555440 has 1920 divisors, whose sum is σ = 68700471459840. Its totient is φ = 2970767923200.

The previous prime is 14999638555439. The next prime is 14999638555441. The reversal of 14999638555440 is 4455583699941.

14999638555440 is a `hidden beast` number, since 1 + 4 + 9 + 9 + 9 + 63 + 8 + 5 + 554 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (14999638555439) and next prime (14999638555441).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (14999638555441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2418123379 + ... + 2418129581.

It is an arithmetic number, because the mean of its divisors is an integer number (35781495552).

Almost surely, 2^{14999638555440} is an apocalyptic number.

14999638555440 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 14999638555440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34350235729920).

14999638555440 is an abundant number, since it is smaller than the sum of its proper divisors (53700832904400).

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

14999638555440 is a wasteful number, since it uses less digits than its factorization.

14999638555440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348 (or 6329 counting only the distinct ones).

The product of its (nonzero) digits is 839808000, while the sum is 72.

The spelling of 14999638555440 in words is "fourteen trillion, nine hundred ninety-nine billion, six hundred thirty-eight million, five hundred fifty-five thousand, four hundred forty".