684183452129 has 4 divisors (see below), whose sum is σ = 684238186176. Its totient is φ = 684128718084.

The previous prime is 684183452107. The next prime is 684183452137. The reversal of 684183452129 is 921254381486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921254381486 = 2 ⋅460627190743.

It is a cyclic number.

It is not a de Polignac number, because 684183452129 - 2³² = 679888484833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (684183452629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27348269 + ... + 27373274.

It is an arithmetic number, because the mean of its divisors is an integer number (171059546544).

Almost surely, 2^684183452129 is an apocalyptic number.

It is an amenable number.

684183452129 is a deficient number, since it is larger than the sum of its proper divisors (54734047).

684183452129 is a wasteful number, since it uses less digits than its factorization.

684183452129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54734046.

The product of its digits is 3317760, while the sum is 53.

The spelling of 684183452129 in words is "six hundred eighty-four billion, one hundred eighty-three million, four hundred fifty-two thousand, one hundred twenty-nine".