999999999982 has 16 divisors (see below), whose sum is σ = 1558227422304. Its totient is φ = 480934384000.

The previous prime is 999999999961. The next prime is 999999999989. The reversal of 999999999982 is 289999999999.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999999989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85875319 + ... + 85886962.

It is an arithmetic number, because the mean of its divisors is an integer number (97389213894).

Almost surely, 2^999999999982 is an apocalyptic number.

999999999982 is a deficient number, since it is larger than the sum of its proper divisors (558227422322).

999999999982 is a wasteful number, since it uses less digits than its factorization.

999999999982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171762395.

The product of its digits is 55788550416, while the sum is 100.

It can be divided in two parts, 99999999998 and 2, that added together give a 11-th power (100000000000 = 10¹¹).

The spelling of 999999999982 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-two".