1799900099999 has 16 divisors (see below), whose sum is σ = 1876258110720. Its totient is φ = 1725226050240.

The previous prime is 1799900099953. The next prime is 1799900100017. The reversal of 1799900099999 is 9999900099971.

It is a cyclic number.

It is not a de Polignac number, because 1799900099999 - 2³² = 1795605132703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1799900029999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176702 + ... + 1905524.

It is an arithmetic number, because the mean of its divisors is an integer number (117266131920).

Almost surely, 2^{1799900099999} is an apocalyptic number.

1799900099999 is a deficient number, since it is larger than the sum of its proper divisors (76358010721).

1799900099999 is a wasteful number, since it uses less digits than its factorization.

1799900099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729310.

The product of its (nonzero) digits is 301327047, while the sum is 80.

The spelling of 1799900099999 in words is "one trillion, seven hundred ninety-nine billion, nine hundred million, ninety-nine thousand, nine hundred ninety-nine".