1326258145963 has 4 divisors (see below), whose sum is σ = 1343046223840. Its totient is φ = 1309470068088.

The previous prime is 1326258145903. The next prime is 1326258145991. The reversal of 1326258145963 is 3695418526231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1326258145963 - 2¹⁷ = 1326258014891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326258145903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8394038820 + ... + 8394038977.

It is an arithmetic number, because the mean of its divisors is an integer number (335761555960).

Almost surely, 2^{1326258145963} is an apocalyptic number.

1326258145963 is a deficient number, since it is larger than the sum of its proper divisors (16788077877).

1326258145963 is an equidigital number, since it uses as much as digits as its factorization.

1326258145963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16788077876.

The product of its digits is 9331200, while the sum is 55.

The spelling of 1326258145963 in words is "one trillion, three hundred twenty-six billion, two hundred fifty-eight million, one hundred forty-five thousand, nine hundred sixty-three".