618429044399 has 4 divisors (see below), whose sum is σ = 618701602440. Its totient is φ = 618156486360.

The previous prime is 618429044393. The next prime is 618429044407. The reversal of 618429044399 is 993440924816.

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 618429044399 - 2³² = 614134077103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618429044393) 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, 136275617 + ... + 136280154.

It is an arithmetic number, because the mean of its divisors is an integer number (154675400610).

Almost surely, 2^618429044399 is an apocalyptic number.

618429044399 is a deficient number, since it is larger than the sum of its proper divisors (272558041).

618429044399 is a wasteful number, since it uses less digits than its factorization.

618429044399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272558040.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 618429044399 in words is "six hundred eighteen billion, four hundred twenty-nine million, forty-four thousand, three hundred ninety-nine".