662516325121 has 6 divisors (see below), whose sum is σ = 770682255810. Its totient is φ = 567871135776.

The previous prime is 662516325049. The next prime is 662516325127. The reversal of 662516325121 is 121523615266.

It can be written as a sum of positive squares in only one way, i.e., 632087011521 + 30429313600 = 795039^2 + 174440^2 .

It is not a de Polignac number, because 662516325121 - 2¹⁹ = 662515800833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662516325127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6760370616 + ... + 6760370713.

It is an arithmetic number, because the mean of its divisors is an integer number (128447042635).

Almost surely, 2^662516325121 is an apocalyptic number.

It is an amenable number.

662516325121 is a deficient number, since it is larger than the sum of its proper divisors (108165930689).

662516325121 is a wasteful number, since it uses less digits than its factorization.

662516325121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13520741343 (or 13520741336 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The spelling of 662516325121 in words is "six hundred sixty-two billion, five hundred sixteen million, three hundred twenty-five thousand, one hundred twenty-one".