19887214480 has 240 divisors, whose sum is σ = 55530731520. Its totient is φ = 6600351744.

The previous prime is 19887214469. The next prime is 19887214507. The reversal of 19887214480 is 8441278891.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 21406656 + ... + 21407584.

It is an arithmetic number, because the mean of its divisors is an integer number (231378048).

Almost surely, 2^19887214480 is an apocalyptic number.

19887214480 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 19887214480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27765365760).

19887214480 is an abundant number, since it is smaller than the sum of its proper divisors (35643517040).

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

19887214480 is a wasteful number, since it uses less digits than its factorization.

19887214480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 19887214480 in words is "nineteen billion, eight hundred eighty-seven million, two hundred fourteen thousand, four hundred eighty".