13375436993 has 2 divisors, whose sum is σ = 13375436994. Its totient is φ = 13375436992.

The previous prime is 13375436983. The next prime is 13375437007. The reversal of 13375436993 is 39963457331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9081518209 + 4293918784 = 95297^2 + 65528^2 .

It is a cyclic number.

It is not a de Polignac number, because 13375436993 - 2²⁴ = 13358659777 is a prime.

It is not a weakly prime, because it can be changed into another prime (13375436903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6687718496 + 6687718497.

It is an arithmetic number, because the mean of its divisors is an integer number (6687718497).

Almost surely, 2^13375436993 is an apocalyptic number.

It is an amenable number.

13375436993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13375436993 is an equidigital number, since it uses as much as digits as its factorization.

13375436993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 53.

The spelling of 13375436993 in words is "thirteen billion, three hundred seventy-five million, four hundred thirty-six thousand, nine hundred ninety-three".