13223522987 has 2 divisors, whose sum is σ = 13223522988. Its totient is φ = 13223522986.

The previous prime is 13223522953. The next prime is 13223523007. The reversal of 13223522987 is 78922532231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223522987 is a prime.

It is not a weakly prime, because it can be changed into another prime (13223542987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611761493 + 6611761494.

It is an arithmetic number, because the mean of its divisors is an integer number (6611761494).

Almost surely, 2^13223522987 is an apocalyptic number.

13223522987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13223522987 is an equidigital number, since it uses as much as digits as its factorization.

13223522987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The spelling of 13223522987 in words is "thirteen billion, two hundred twenty-three million, five hundred twenty-two thousand, nine hundred eighty-seven".