99427211520 has 1152 divisors, whose sum is σ = 415366963200. Its totient is φ = 19697762304.

The previous prime is 99427211509. The next prime is 99427211563. The reversal of 99427211520 is 2511272499.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 715303611 + ... + 715303749.

It is an arithmetic number, because the mean of its divisors is an integer number (360561600).

Almost surely, 2^99427211520 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 99427211520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207683481600).

99427211520 is an abundant number, since it is smaller than the sum of its proper divisors (315939751680).

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

99427211520 is a wasteful number, since it uses less digits than its factorization.

99427211520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 99427211520 in words is "ninety-nine billion, four hundred twenty-seven million, two hundred eleven thousand, five hundred twenty".