1999782552942 has 48 divisors (see below), whose sum is σ = 4397381745120. Its totient is φ = 656738750976.

The previous prime is 1999782552913. The next prime is 1999782552967. The reversal of 1999782552942 is 2492552879991.

1999782552942 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 78 + 25 + 529 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2603967 + ... + 3283322.

It is an arithmetic number, because the mean of its divisors is an integer number (91612119690).

Almost surely, 2^{1999782552942} is an apocalyptic number.

1999782552942 is an abundant number, since it is smaller than the sum of its proper divisors (2397599192178).

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

1999782552942 is a wasteful number, since it uses less digits than its factorization.

1999782552942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5887577 (or 5887574 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 72.

The spelling of 1999782552942 in words is "one trillion, nine hundred ninety-nine billion, seven hundred eighty-two million, five hundred fifty-two thousand, nine hundred forty-two".