99251283233440 has 192 divisors, whose sum is σ = 256956391673856. Its totient is φ = 36005388705792.

The previous prime is 99251283233411. The next prime is 99251283233519. The reversal of 99251283233440 is 4433238215299.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52445124 + ... + 54304636.

It is an arithmetic number, because the mean of its divisors is an integer number (1338314539968).

Almost surely, 2^{99251283233440} 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 99251283233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128478195836928).

99251283233440 is an abundant number, since it is smaller than the sum of its proper divisors (157705108440416).

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

99251283233440 is a wasteful number, since it uses less digits than its factorization.

99251283233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859991 (or 1859983 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 99251283233440 in words is "ninety-nine trillion, two hundred fifty-one billion, two hundred eighty-three million, two hundred thirty-three thousand, four hundred forty".