662368551121 has 4 divisors (see below), whose sum is σ = 680270403892. Its totient is φ = 644466698352.

The previous prime is 662368551101. The next prime is 662368551139. The reversal of 662368551121 is 121155863266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 538667923600 + 123700627521 = 733940^2 + 351711^2 .

It is a cyclic number.

It is not a de Polignac number, because 662368551121 - 2²⁵ = 662334996689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662368551101) 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, 8950926330 + ... + 8950926403.

It is an arithmetic number, because the mean of its divisors is an integer number (170067600973).

Almost surely, 2^662368551121 is an apocalyptic number.

It is an amenable number.

662368551121 is a deficient number, since it is larger than the sum of its proper divisors (17901852771).

662368551121 is a wasteful number, since it uses less digits than its factorization.

662368551121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17901852770.

The product of its digits is 518400, while the sum is 46.

The spelling of 662368551121 in words is "six hundred sixty-two billion, three hundred sixty-eight million, five hundred fifty-one thousand, one hundred twenty-one".