662077317021 has 4 divisors (see below), whose sum is σ = 882769756032. Its totient is φ = 441384878012.

The previous prime is 662077316983. The next prime is 662077317037. The reversal of 662077317021 is 120713770266.

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 cyclic number.

It is not a de Polignac number, because 662077317021 - 2¹⁰ = 662077315997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662077317071) 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, 110346219501 + ... + 110346219506.

It is an arithmetic number, because the mean of its divisors is an integer number (220692439008).

Almost surely, 2^662077317021 is an apocalyptic number.

It is an amenable number.

662077317021 is a deficient number, since it is larger than the sum of its proper divisors (220692439011).

662077317021 is a wasteful number, since it uses less digits than its factorization.

662077317021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220692439010.

The product of its (nonzero) digits is 148176, while the sum is 42.

The spelling of 662077317021 in words is "six hundred sixty-two billion, seventy-seven million, three hundred seventeen thousand, twenty-one".