99111736442880 has 2240 divisors, whose sum is σ = 422495529984000. Its totient is φ = 21831603978240.

The previous prime is 99111736442879. The next prime is 99111736442881. The reversal of 99111736442880 is 8824463711199.

99111736442880 is a `hidden beast` number, since 9 + 9 + 1 + 1 + 1 + 73 + 64 + 428 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (99111736442879) and next prime (99111736442881).

It is a tau number, because it is divible by the number of its divisors (2240).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99111736442881) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 414693457801 + ... + 414693458039.

Almost surely, 2^{99111736442880} is an apocalyptic number.

99111736442880 is a gapful number since it is divisible by the number (90) 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 99111736442880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211247764992000).

99111736442880 is an abundant number, since it is smaller than the sum of its proper divisors (323383793541120).

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

99111736442880 is an frugal number, since it uses more digits than its factorization.

99111736442880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 99111736442880 in words is "ninety-nine trillion, one hundred eleven billion, seven hundred thirty-six million, four hundred forty-two thousand, eight hundred eighty".