99842549021280 has 576 divisors, whose sum is σ = 387309371904000. Its totient is φ = 23218235559936.

The previous prime is 99842549021239. The next prime is 99842549021323. The reversal of 99842549021280 is 8212094524899.

99842549021280 is a `hidden beast` number, since 9 + 9 + 8 + 4 + 2 + 549 + 0 + 2 + 1 + 2 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 127298161 + ... + 128080079.

It is an arithmetic number, because the mean of its divisors is an integer number (672412104000).

Almost surely, 2^{99842549021280} is an apocalyptic number.

99842549021280 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 99842549021280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193654685952000).

99842549021280 is an abundant number, since it is smaller than the sum of its proper divisors (287466822882720).

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

99842549021280 is a wasteful number, since it uses less digits than its factorization.

99842549021280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782331 (or 782320 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 99842549021280 in words is "ninety-nine trillion, eight hundred forty-two billion, five hundred forty-nine million, twenty-one thousand, two hundred eighty".