1099991637024 has 96 divisors (see below), whose sum is σ = 3302094781440. Its totient is φ = 314081432832.

The previous prime is 1099991636971. The next prime is 1099991637029. The reversal of 1099991637024 is 4207361999901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1099991637029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522667 + ... + 1572629.

It is an arithmetic number, because the mean of its divisors is an integer number (34396820640).

Almost surely, 2^{1099991637024} is an apocalyptic number.

1099991637024 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 1099991637024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651047390720).

1099991637024 is an abundant number, since it is smaller than the sum of its proper divisors (2202103144416).

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

1099991637024 is a wasteful number, since it uses less digits than its factorization.

1099991637024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051542 (or 1051534 counting only the distinct ones).

The product of its (nonzero) digits is 6613488, while the sum is 60.

The spelling of 1099991637024 in words is "one trillion, ninety-nine billion, nine hundred ninety-one million, six hundred thirty-seven thousand, twenty-four".