999999998530 has 64 divisors (see below), whose sum is σ = 2110847558400. Its totient is φ = 337735560960.

The previous prime is 999999998527. The next prime is 999999998531. The reversal of 999999998530 is 35899999999.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (999999998531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6908686 + ... + 7051945.

It is an arithmetic number, because the mean of its divisors is an integer number (32981993100).

Almost surely, 2^999999998530 is an apocalyptic number.

999999998530 is an abundant number, since it is smaller than the sum of its proper divisors (1110847559870).

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

999999998530 is a wasteful number, since it uses less digits than its factorization.

999999998530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960699.

The product of its (nonzero) digits is 5165606520, while the sum is 88.

The spelling of 999999998530 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred thirty".