1999042174528 has 560 divisors, whose sum is σ = 4985596433664. Its totient is φ = 793938862080.

The previous prime is 1999042174489. The next prime is 1999042174553. The reversal of 1999042174528 is 8254712409991.

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, 12732752626 + ... + 12732752782.

Almost surely, 2^{1999042174528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999042174528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492798216832).

1999042174528 is an abundant number, since it is smaller than the sum of its proper divisors (2986554259136).

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

1999042174528 is an equidigital number, since it uses as much as digits as its factorization.

1999042174528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 1999042174528 in words is "one trillion, nine hundred ninety-nine billion, forty-two million, one hundred seventy-four thousand, five hundred twenty-eight".