1999107551342 has 16 divisors (see below), whose sum is σ = 3271308768000. Its totient is φ = 908673621240.

The previous prime is 1999107551327. The next prime is 1999107551351. The reversal of 1999107551342 is 2431557019991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313909 + ... + 2392607.

It is an arithmetic number, because the mean of its divisors is an integer number (204456798000).

Almost surely, 2^{1999107551342} is an apocalyptic number.

1999107551342 is a deficient number, since it is larger than the sum of its proper divisors (1272201216658).

1999107551342 is a wasteful number, since it uses less digits than its factorization.

1999107551342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162951.

The product of its (nonzero) digits is 3061800, while the sum is 56.

The spelling of 1999107551342 in words is "one trillion, nine hundred ninety-nine billion, one hundred seven million, five hundred fifty-one thousand, three hundred forty-two".