11001663649 has 4 divisors (see below), whose sum is σ = 11257516336. Its totient is φ = 10745810964.

The previous prime is 11001663643. The next prime is 11001663667. The reversal of 11001663649 is 94636610011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94636610011 = 1847 ⋅51238013.

It is a cyclic number.

It is not a de Polignac number, because 11001663649 - 2³ = 11001663641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001663641) 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, 127926279 + ... + 127926364.

It is an arithmetic number, because the mean of its divisors is an integer number (2814379084).

Almost surely, 2^11001663649 is an apocalyptic number.

It is an amenable number.

11001663649 is a deficient number, since it is larger than the sum of its proper divisors (255852687).

11001663649 is an equidigital number, since it uses as much as digits as its factorization.

11001663649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255852686.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 11001663649 in words is "eleven billion, one million, six hundred sixty-three thousand, six hundred forty-nine".