1099297679888 has 20 divisors (see below), whose sum is σ = 2130478222140. Its totient is φ = 549496848384.

The previous prime is 1099297679869. The next prime is 1099297679899. The reversal of 1099297679888 is 8889767929901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 443145838864 + 656151841024 = 665692^2 + 810032^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9439793 + ... + 9555536.

It is an arithmetic number, because the mean of its divisors is an integer number (106523911107).

Almost surely, 2^{1099297679888} is an apocalyptic number.

It is an amenable number.

1099297679888 is a deficient number, since it is larger than the sum of its proper divisors (1031180542252).

1099297679888 is a wasteful number, since it uses less digits than its factorization.

1099297679888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18998954 (or 18998948 counting only the distinct ones).

The product of its (nonzero) digits is 1975228416, while the sum is 83.

The spelling of 1099297679888 in words is "one trillion, ninety-nine billion, two hundred ninety-seven million, six hundred seventy-nine thousand, eight hundred eighty-eight".