998132265920 has 336 divisors, whose sum is σ = 2542171171680. Its totient is φ = 373163163648.

The previous prime is 998132265919. The next prime is 998132265931. The reversal of 998132265920 is 29562231899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1461393899 + ... + 1461394581.

It is an arithmetic number, because the mean of its divisors is an integer number (7565985630).

Almost surely, 2^998132265920 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 998132265920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271085585840).

998132265920 is an abundant number, since it is smaller than the sum of its proper divisors (1544038905760).

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

998132265920 is a wasteful number, since it uses less digits than its factorization.

998132265920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 998132265920 in words is "nine hundred ninety-eight billion, one hundred thirty-two million, two hundred sixty-five thousand, nine hundred twenty".