11400542665 has 8 divisors (see below), whose sum is σ = 13834366920. Its totient is φ = 9017956992.

The previous prime is 11400542663. The next prime is 11400542707. The reversal of 11400542665 is 56624500411.

It can be written as a sum of positive squares in 4 ways, for example, as 2952726921 + 8447815744 = 54339^2 + 91912^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11400542665 - 2¹ = 11400542663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11400542665.

It is not an unprimeable number, because it can be changed into a prime (11400542663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12809154 + ... + 12810043.

It is an arithmetic number, because the mean of its divisors is an integer number (1729295865).

Almost surely, 2^11400542665 is an apocalyptic number.

It is an amenable number.

11400542665 is a deficient number, since it is larger than the sum of its proper divisors (2433824255).

11400542665 is an equidigital number, since it uses as much as digits as its factorization.

11400542665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25619291.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 11400542665 in words is "eleven billion, four hundred million, five hundred forty-two thousand, six hundred sixty-five".