17813078953 has 2 divisors, whose sum is σ = 17813078954. Its totient is φ = 17813078952.

The previous prime is 17813078903. The next prime is 17813078977. The reversal of 17813078953 is 35987031871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17761425984 + 51652969 = 133272^2 + 7187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17813078953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17813078953.

It is not a weakly prime, because it can be changed into another prime (17813078903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8906539476 + 8906539477.

It is an arithmetic number, because the mean of its divisors is an integer number (8906539477).

Almost surely, 2^17813078953 is an apocalyptic number.

It is an amenable number.

17813078953 is a deficient number, since it is larger than the sum of its proper divisors (1).

17813078953 is an equidigital number, since it uses as much as digits as its factorization.

17813078953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 17813078953 in words is "seventeen billion, eight hundred thirteen million, seventy-eight thousand, nine hundred fifty-three".