998557832475000 has 2400 divisors, whose sum is σ = 4148604119998800. Its totient is φ = 224373285360000.

The previous prime is 998557832474933. The next prime is 998557832475001. The reversal of 998557832475000 is 574238755899.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

998557832475000 is a `hidden beast` number, since 9 + 9 + 8 + 5 + 5 + 78 + 3 + 2 + 47 + 500 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 998557832475000.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 154875 × 43365 × 148680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998557832475001) by changing a digit.

It is a polite number, since it can be written in 599 ways as a sum of consecutive naturals, for example, 16924709024971 + ... + 16924709025029.

Almost surely, 2^{998557832475000} is an apocalyptic number.

998557832475000 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 998557832475000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2074302059999400).

998557832475000 is an abundant number, since it is smaller than the sum of its proper divisors (3150046287523800).

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

998557832475000 is an frugal number, since it uses more digits than its factorization.

998557832475000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 762048000, while the sum is 72.

The spelling of 998557832475000 in words is "nine hundred ninety-eight trillion, five hundred fifty-seven billion, eight hundred thirty-two million, four hundred seventy-five thousand".