99451210320 has 1440 divisors, whose sum is σ = 452891013120. Its totient is φ = 19700029440.

The previous prime is 99451210303. The next prime is 99451210333. The reversal of 99451210320 is 2301215499.

It is a super-2 number, since 2×99451210320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1258876041 + ... + 1258876119.

It is an arithmetic number, because the mean of its divisors is an integer number (314507648).

Almost surely, 2^99451210320 is an apocalyptic number.

99451210320 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 99451210320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226445506560).

99451210320 is an abundant number, since it is smaller than the sum of its proper divisors (353439802800).

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

99451210320 is a wasteful number, since it uses less digits than its factorization.

99451210320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 99451210320 in words is "ninety-nine billion, four hundred fifty-one million, two hundred ten thousand, three hundred twenty".