99853774720 has 256 divisors, whose sum is σ = 281551334400. Its totient is φ = 33151795200.

The previous prime is 99853774697. The next prime is 99853774729. The reversal of 99853774720 is 2747735899.

It is a super-2 number, since 2×99853774720² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99853774729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25529565 + ... + 25533475.

It is an arithmetic number, because the mean of its divisors is an integer number (1099809900).

Almost surely, 2^99853774720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99853774720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140775667200).

99853774720 is an abundant number, since it is smaller than the sum of its proper divisors (181697559680).

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

99853774720 is a wasteful number, since it uses less digits than its factorization.

99853774720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117 (or 4105 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 99853774720 in words is "ninety-nine billion, eight hundred fifty-three million, seven hundred seventy-four thousand, seven hundred twenty".