2105986831204 has 6 divisors (see below), whose sum is σ = 3685476954614. Its totient is φ = 1052993415600.

The previous prime is 2105986831181. The next prime is 2105986831213. The reversal of 2105986831204 is 4021386895012.

It can be written as a sum of positive squares in only one way, i.e., 2090684646400 + 15302184804 = 1445920^2 + 123702^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263248353897 + ... + 263248353904.

Almost surely, 2^{2105986831204} is an apocalyptic number.

It is an amenable number.

2105986831204 is a deficient number, since it is larger than the sum of its proper divisors (1579490123410).

2105986831204 is a wasteful number, since it uses less digits than its factorization.

2105986831204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526496707805 (or 526496707803 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 2105986831204 in words is "two trillion, one hundred five billion, nine hundred eighty-six million, eight hundred thirty-one thousand, two hundred four".