109253997520 has 80 divisors (see below), whose sum is σ = 261090289152. Its totient is φ = 42493570560.

The previous prime is 109253997499. The next prime is 109253997521. The reversal of 109253997520 is 25799352901.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109253997521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695910 + ... + 838330.

Almost surely, 2^109253997520 is an apocalyptic number.

109253997520 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 109253997520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130545144576).

109253997520 is an abundant number, since it is smaller than the sum of its proper divisors (151836291632).

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

109253997520 is a wasteful number, since it uses less digits than its factorization.

109253997520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142700 (or 142694 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 52.

The spelling of 109253997520 in words is "one hundred nine billion, two hundred fifty-three million, nine hundred ninety-seven thousand, five hundred twenty".