1099999999923 has 16 divisors (see below), whose sum is σ = 1605211741056. Its totient is φ = 664495107840.

The previous prime is 1099999999913. The next prime is 1099999999957. The reversal of 1099999999923 is 3299999999901.

It is not a de Polignac number, because 1099999999923 - 2¹⁰ = 1099999998899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1099999999923.

It is not an unprimeable number, because it can be changed into a prime (1099999999913) 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, 54278686 + ... + 54298947.

It is an arithmetic number, because the mean of its divisors is an integer number (100325733816).

Almost surely, 2^{1099999999923} is an apocalyptic number.

1099999999923 is a deficient number, since it is larger than the sum of its proper divisors (505211741133).

1099999999923 is a wasteful number, since it uses less digits than its factorization.

1099999999923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108577954.

The product of its (nonzero) digits is 2324522934, while the sum is 87.

The spelling of 1099999999923 in words is "one trillion, ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred twenty-three".