1099579399744 has 112 divisors (see below), whose sum is σ = 2546446609408. Its totient is φ = 461364761088.

The previous prime is 1099579399691. The next prime is 1099579399757. The reversal of 1099579399744 is 4479939759901.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4780237 + ... + 5004979.

Almost surely, 2^{1099579399744} is an apocalyptic number.

1099579399744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099579399744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273223304704).

1099579399744 is an abundant number, since it is smaller than the sum of its proper divisors (1446867209664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099579399744 is a wasteful number, since it uses less digits than its factorization.

1099579399744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224992 (or 224982 counting only the distinct ones).

The product of its (nonzero) digits is 694416240, while the sum is 76.

The spelling of 1099579399744 in words is "one trillion, ninety-nine billion, five hundred seventy-nine million, three hundred ninety-nine thousand, seven hundred forty-four".