1238668668321 has 32 divisors (see below), whose sum is σ = 1906370534400. Its totient is φ = 700733764800.

The previous prime is 1238668668319. The next prime is 1238668668337.

1238668668321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1238668668321 - 2¹ = 1238668668319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238668668121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28015410 + ... + 28059588.

It is an arithmetic number, because the mean of its divisors is an integer number (59574079200).

Almost surely, 2^{1238668668321} is an apocalyptic number.

It is an amenable number.

1238668668321 is a deficient number, since it is larger than the sum of its proper divisors (667701866079).

1238668668321 is a wasteful number, since it uses less digits than its factorization.

1238668668321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57509.

The product of its digits is 23887872, while the sum is 60.

The spelling of 1238668668321 in words is "one trillion, two hundred thirty-eight billion, six hundred sixty-eight million, six hundred sixty-eight thousand, three hundred twenty-one".