1089268434450 has 432 divisors, whose sum is σ = 3683923588800. Its totient is φ = 238147620480.

The previous prime is 1089268434403. The next prime is 1089268434491. The reversal of 1089268434450 is 544348629801.

1089268434450 is a `hidden beast` number, since 1 + 0 + 8 + 92 + 68 + 43 + 4 + 450 = 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 215 ways as a sum of consecutive naturals, for example, 13653276 + ... + 13732824.

It is an arithmetic number, because the mean of its divisors is an integer number (8527600900).

Almost surely, 2^{1089268434450} is an apocalyptic number.

1089268434450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089268434450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841961794400).

1089268434450 is an abundant number, since it is smaller than the sum of its proper divisors (2594655154350).

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

1089268434450 is a wasteful number, since it uses less digits than its factorization.

1089268434450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79613 (or 79589 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 1089268434450 in words is "one trillion, eighty-nine billion, two hundred sixty-eight million, four hundred thirty-four thousand, four hundred fifty".