104243099689 has 9 divisors (see below), whose sum is σ = 110024815383. Its totient is φ = 98750809152.

The previous prime is 104243099659. The next prime is 104243099693. The reversal of 104243099689 is 986990342401.

The square root of 104243099689 is 322867.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14487733225 + 89755366464 = 120365^2 + 299592^2 .

It is not a de Polignac number, because 104243099689 - 2²⁵ = 104209545257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104243099659) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6125977 + ... + 6142969.

It is an arithmetic number, because the mean of its divisors is an integer number (12224979487).

Almost surely, 2^104243099689 is an apocalyptic number.

104243099689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

104243099689 is the 322867-th square number.

104243099689 is the 161434-th centered octagonal number.

It is an amenable number.

104243099689 is a deficient number, since it is larger than the sum of its proper divisors (5781715694).

104243099689 is an frugal number, since it uses more digits than its factorization.

104243099689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34024 (or 17012 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

It can be divided in two parts, 10424 and 3099689, that added together give a palindrome (3110113).

The spelling of 104243099689 in words is "one hundred four billion, two hundred forty-three million, ninety-nine thousand, six hundred eighty-nine".