11267510481985 has 4 divisors (see below), whose sum is σ = 13521012578388. Its totient is φ = 9014008385584.

The previous prime is 11267510481979. The next prime is 11267510482021. The reversal of 11267510481985 is 58918401576211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3542496151104 + 7725014330881 = 1882152^2 + 2779391^2 .

It is a cyclic number.

It is not a de Polignac number, because 11267510481985 - 2³ = 11267510481977 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126751048194 + ... + 1126751048203.

It is an arithmetic number, because the mean of its divisors is an integer number (3380253144597).

Almost surely, 2^{11267510481985} is an apocalyptic number.

It is an amenable number.

11267510481985 is a deficient number, since it is larger than the sum of its proper divisors (2253502096403).

11267510481985 is an equidigital number, since it uses as much as digits as its factorization.

11267510481985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253502096402.

The product of its (nonzero) digits is 4838400, while the sum is 58.

The spelling of 11267510481985 in words is "eleven trillion, two hundred sixty-seven billion, five hundred ten million, four hundred eighty-one thousand, nine hundred eighty-five".