618039817607 has 4 divisors (see below), whose sum is σ = 650568229080. Its totient is φ = 585511406136.

The previous prime is 618039817553. The next prime is 618039817609. The reversal of 618039817607 is 706718930816.

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 618039817607 - 2⁶ = 618039817543 is a prime.

It is a super-2 number, since 2×618039817607² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618039817609) 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, 16264205708 + ... + 16264205745.

It is an arithmetic number, because the mean of its divisors is an integer number (162642057270).

Almost surely, 2^618039817607 is an apocalyptic number.

618039817607 is a deficient number, since it is larger than the sum of its proper divisors (32528411473).

618039817607 is a wasteful number, since it uses less digits than its factorization.

618039817607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32528411472.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 618039817607 in words is "six hundred eighteen billion, thirty-nine million, eight hundred seventeen thousand, six hundred seven".