671852355739 has 4 divisors (see below), whose sum is σ = 672367976656. Its totient is φ = 671336734824.

The previous prime is 671852355689. The next prime is 671852355773. The reversal of 671852355739 is 937553258176.

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 671852355739 - 2¹¹ = 671852353691 is a prime.

It is a super-2 number, since 2×671852355739² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671852352739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257808504 + ... + 257811109.

It is an arithmetic number, because the mean of its divisors is an integer number (168091994164).

Almost surely, 2^671852355739 is an apocalyptic number.

671852355739 is a deficient number, since it is larger than the sum of its proper divisors (515620917).

671852355739 is a wasteful number, since it uses less digits than its factorization.

671852355739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515620916.

The product of its digits is 47628000, while the sum is 61.

The spelling of 671852355739 in words is "six hundred seventy-one billion, eight hundred fifty-two million, three hundred fifty-five thousand, seven hundred thirty-nine".