1999143522432 has 1536 divisors, whose sum is σ = 7527776256000. Its totient is φ = 496169017344.

The previous prime is 1999143522421. The next prime is 1999143522463. The reversal of 1999143522432 is 2342253419991.

1999143522432 is a `hidden beast` number, since 1 + 99 + 91 + 4 + 35 + 2 + 2 + 432 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11970919213 + ... + 11970919379.

It is an arithmetic number, because the mean of its divisors is an integer number (4900896000).

Almost surely, 2^{1999143522432} is an apocalyptic number.

1999143522432 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 1999143522432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3763888128000).

1999143522432 is an abundant number, since it is smaller than the sum of its proper divisors (5528632733568).

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

1999143522432 is a wasteful number, since it uses less digits than its factorization.

1999143522432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 343 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 1999143522432 in words is "one trillion, nine hundred ninety-nine billion, one hundred forty-three million, five hundred twenty-two thousand, four hundred thirty-two".