1099268081280 has 512 divisors, whose sum is σ = 3952491840000. Its totient is φ = 292306931712.

The previous prime is 1099268081279. The next prime is 1099268081293. The reversal of 1099268081280 is 821808629901.

1099268081280 is a `hidden beast` number, since 10 + 99 + 268 + 0 + 8 + 1 + 280 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 614458626 + ... + 614460414.

It is an arithmetic number, because the mean of its divisors is an integer number (7719710625).

Almost surely, 2^{1099268081280} is an apocalyptic number.

1099268081280 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 1099268081280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1976245920000).

1099268081280 is an abundant number, since it is smaller than the sum of its proper divisors (2853223758720).

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

1099268081280 is an frugal number, since it uses more digits than its factorization.

1099268081280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The spelling of 1099268081280 in words is "one trillion, ninety-nine billion, two hundred sixty-eight million, eighty-one thousand, two hundred eighty".