662138103213 has 24 divisors (see below), whose sum is σ = 1013992053048. Its totient is φ = 414921664512.

The previous prime is 662138103199. The next prime is 662138103257. The reversal of 662138103213 is 312301831266.

662138103213 is a `hidden beast` number, since 6 + 62 + 1 + 381 + 0 + 3 + 213 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 52843894884 + 609294208329 = 229878^2 + 780573^2 .

It is not a de Polignac number, because 662138103213 - 2¹⁸ = 662137841069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662138103113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2681020 + ... + 2917557.

It is an arithmetic number, because the mean of its divisors is an integer number (42249668877).

Almost surely, 2^662138103213 is an apocalyptic number.

It is an amenable number.

662138103213 is a deficient number, since it is larger than the sum of its proper divisors (351853949835).

662138103213 is a wasteful number, since it uses less digits than its factorization.

662138103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5599373 (or 5599370 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 662138103213 its reverse (312301831266), we get a palindrome (974439934479).

The spelling of 662138103213 in words is "six hundred sixty-two billion, one hundred thirty-eight million, one hundred three thousand, two hundred thirteen".