99261521795424 has 24 divisors (see below), whose sum is σ = 260561494713240. Its totient is φ = 33087173931776.

The previous prime is 99261521795419. The next prime is 99261521795431. The reversal of 99261521795424 is 42459712516299.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516987092589 + ... + 516987092780.

It is an arithmetic number, because the mean of its divisors is an integer number (10856728946385).

Almost surely, 2^{99261521795424} is an apocalyptic number.

It is an amenable number.

99261521795424 is an abundant number, since it is smaller than the sum of its proper divisors (161299972917816).

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

99261521795424 is a wasteful number, since it uses less digits than its factorization.

99261521795424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033974185382 (or 1033974185374 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 66.

The spelling of 99261521795424 in words is "ninety-nine trillion, two hundred sixty-one billion, five hundred twenty-one million, seven hundred ninety-five thousand, four hundred twenty-four".