11403243641 has 4 divisors (see below), whose sum is σ = 11559452532. Its totient is φ = 11247034752.

The previous prime is 11403243587. The next prime is 11403243647. The reversal of 11403243641 is 14634230411.

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 4006383616 + 7396860025 = 63296^2 + 86005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11403243641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11403243647) 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, 78104336 + ... + 78104481.

It is an arithmetic number, because the mean of its divisors is an integer number (2889863133).

Almost surely, 2^11403243641 is an apocalyptic number.

It is an amenable number.

11403243641 is a deficient number, since it is larger than the sum of its proper divisors (156208891).

11403243641 is an equidigital number, since it uses as much as digits as its factorization.

11403243641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156208890.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 11403243641 in words is "eleven billion, four hundred three million, two hundred forty-three thousand, six hundred forty-one".