1988788230720 has 560 divisors, whose sum is σ = 7254647353008. Its totient is φ = 516966727680.

The previous prime is 1988788230719. The next prime is 1988788230757. The reversal of 1988788230720 is 270328878891.

It can be written as a sum of positive squares in 8 ways, for example, as 65995554816 + 1922792675904 = 256896^2 + 1386648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 215675710 + ... + 215684930.

Almost surely, 2^{1988788230720} is an apocalyptic number.

1988788230720 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 1988788230720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3627323676504).

1988788230720 is an abundant number, since it is smaller than the sum of its proper divisors (5265859122288).

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

1988788230720 is a wasteful number, since it uses less digits than its factorization.

1988788230720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9460 (or 9441 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The spelling of 1988788230720 in words is "one trillion, nine hundred eighty-eight billion, seven hundred eighty-eight million, two hundred thirty thousand, seven hundred twenty".