99011811852 has 144 divisors (see below), whose sum is σ = 256514338080. Its totient is φ = 32194584576.

The previous prime is 99011811851. The next prime is 99011811863. The reversal of 99011811852 is 25811811099.

It is a junction number, because it is equal to n+sod(n) for n = 99011811798 and 99011811807.

It is not an unprimeable number, because it can be changed into a prime (99011811851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115532608 + ... + 115533464.

It is an arithmetic number, because the mean of its divisors is an integer number (1781349570).

Almost surely, 2^99011811852 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 99011811852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128257169040).

99011811852 is an abundant number, since it is smaller than the sum of its proper divisors (157502526228).

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

99011811852 is a wasteful number, since it uses less digits than its factorization.

99011811852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 45.

The spelling of 99011811852 in words is "ninety-nine billion, eleven million, eight hundred eleven thousand, eight hundred fifty-two".