1999034322432 has 320 divisors, whose sum is σ = 6216802099200. Its totient is φ = 559027445760.

The previous prime is 1999034322409. The next prime is 1999034322451. The reversal of 1999034322432 is 2342234309991.

It is a super-2 number, since 2×1999034322432² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 106102069 + ... + 106120907.

It is an arithmetic number, because the mean of its divisors is an integer number (19427506560).

Almost surely, 2^{1999034322432} is an apocalyptic number.

1999034322432 is a gapful number since it is divisible by the number (12) 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 1999034322432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3108401049600).

1999034322432 is an abundant number, since it is smaller than the sum of its proper divisors (4217767776768).

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

1999034322432 is a wasteful number, since it uses less digits than its factorization.

1999034322432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19077 (or 19061 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 51.

The spelling of 1999034322432 in words is "one trillion, nine hundred ninety-nine billion, thirty-four million, three hundred twenty-two thousand, four hundred thirty-two".