999999361113523 has 4 divisors (see below), whose sum is σ = 1004738694578728. Its totient is φ = 995260027648320.

The previous prime is 999999361113517. The next prime is 999999361113527. The reversal of 999999361113523 is 325311163999999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 999999361113523 - 2²⁹ = 999998824242611 is a prime.

It is the 31622767-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999999361113527) by changing a digit.

It is a nontrivial repunit in base 31622766.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369666732286 + ... + 2369666732707.

It is an arithmetic number, because the mean of its divisors is an integer number (251184673644682).

Almost surely, 2^{999999361113523} is an apocalyptic number.

999999361113523 is a deficient number, since it is larger than the sum of its proper divisors (4739333465205).

999999361113523 is a wasteful number, since it uses less digits than its factorization.

999999361113523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739333465204.

The product of its digits is 860934420, while the sum is 79.

The spelling of 999999361113523 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, three hundred sixty-one million, one hundred thirteen thousand, five hundred twenty-three".