1097491067520 has 128 divisors (see below), whose sum is σ = 3498905592000. Its totient is φ = 292609671168.

The previous prime is 1097491067507. The next prime is 1097491067521. The reversal of 1097491067520 is 257601947901.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1097491067521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10814776 + ... + 10915784.

Almost surely, 2^{1097491067520} is an apocalyptic number.

1097491067520 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 1097491067520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749452796000).

1097491067520 is an abundant number, since it is smaller than the sum of its proper divisors (2401414524480).

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

1097491067520 is a wasteful number, since it uses less digits than its factorization.

1097491067520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106690 (or 106678 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 1097491067520 in words is "one trillion, ninety-seven billion, four hundred ninety-one million, sixty-seven thousand, five hundred twenty".