1421988600018 has 128 divisors (see below), whose sum is σ = 3336966420480. Its totient is φ = 395510169600.

The previous prime is 1421988600017. The next prime is 1421988600047. The reversal of 1421988600018 is 8100068891241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421988600018.

It is not an unprimeable number, because it can be changed into a prime (1421988600017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1092995968 + ... + 1092997268.

It is an arithmetic number, because the mean of its divisors is an integer number (26070050160).

Almost surely, 2^{1421988600018} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421988600018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668483210240).

1421988600018 is an abundant number, since it is smaller than the sum of its proper divisors (1914977820462).

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

1421988600018 is a wasteful number, since it uses less digits than its factorization.

1421988600018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912.

The product of its (nonzero) digits is 221184, while the sum is 48.

The spelling of 1421988600018 in words is "one trillion, four hundred twenty-one billion, nine hundred eighty-eight million, six hundred thousand, eighteen".