13628678993 has 2 divisors, whose sum is σ = 13628678994. Its totient is φ = 13628678992.

The previous prime is 13628678887. The next prime is 13628679007. The reversal of 13628678993 is 39987682631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12031237969 + 1597441024 = 109687^2 + 39968^2 .

It is a cyclic number.

It is not a de Polignac number, because 13628678993 - 2¹⁴ = 13628662609 is a prime.

It is not a weakly prime, because it can be changed into another prime (13628638993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6814339496 + 6814339497.

It is an arithmetic number, because the mean of its divisors is an integer number (6814339497).

Almost surely, 2^13628678993 is an apocalyptic number.

It is an amenable number.

13628678993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13628678993 is an equidigital number, since it uses as much as digits as its factorization.

13628678993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 62.

The spelling of 13628678993 in words is "thirteen billion, six hundred twenty-eight million, six hundred seventy-eight thousand, nine hundred ninety-three".