2019780989512 has 128 divisors (see below), whose sum is σ = 4640634633600. Its totient is φ = 818236151040.

The previous prime is 2019780989491. The next prime is 2019780989521. The reversal of 2019780989512 is 2159890879102.

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, 3762723 + ... + 4265869.

It is an arithmetic number, because the mean of its divisors is an integer number (36254958075).

Almost surely, 2^{2019780989512} is an apocalyptic number.

2019780989512 is a gapful number since it is divisible by the number (22) 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 2019780989512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320317316800).

2019780989512 is an abundant number, since it is smaller than the sum of its proper divisors (2620853644088).

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

2019780989512 is a wasteful number, since it uses less digits than its factorization.

2019780989512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503228 (or 503202 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 61.

The spelling of 2019780989512 in words is "two trillion, nineteen billion, seven hundred eighty million, nine hundred eighty-nine thousand, five hundred twelve".