655002665949 has 4 divisors (see below), whose sum is σ = 873336887936. Its totient is φ = 436668443964.

The previous prime is 655002665923. The next prime is 655002665953. The reversal of 655002665949 is 949566200556.

It is a happy number.

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.

It is a de Polignac number, because none of the positive numbers 2^k-655002665949 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 (655002665749) 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, 109167110989 + ... + 109167110994.

It is an arithmetic number, because the mean of its divisors is an integer number (218334221984).

Almost surely, 2^655002665949 is an apocalyptic number.

It is an amenable number.

655002665949 is a deficient number, since it is larger than the sum of its proper divisors (218334221987).

655002665949 is a wasteful number, since it uses less digits than its factorization.

655002665949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218334221986.

The product of its (nonzero) digits is 17496000, while the sum is 57.

The spelling of 655002665949 in words is "six hundred fifty-five billion, two million, six hundred sixty-five thousand, nine hundred forty-nine".