1099238999040 has 3168 divisors, whose sum is σ = 5280014113920. Its totient is φ = 216710774784.

The previous prime is 1099238999029. The next prime is 1099238999041. The reversal of 1099238999040 is 409998329901.

It is a super-2 number, since 2×1099238999040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1099238999041) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 15058068444 + ... + 15058068516.

Almost surely, 2^{1099238999040} is an apocalyptic number.

1099238999040 is a gapful number since it is divisible by the number (10) 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 1099238999040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2640007056960).

1099238999040 is an abundant number, since it is smaller than the sum of its proper divisors (4180775114880).

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

1099238999040 is a wasteful number, since it uses less digits than its factorization.

1099238999040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 63.

The spelling of 1099238999040 in words is "one trillion, ninety-nine billion, two hundred thirty-eight million, nine hundred ninety-nine thousand, forty".