11143643001 has 4 divisors (see below), whose sum is σ = 14858190672. Its totient is φ = 7429095332.

The previous prime is 11143642973. The next prime is 11143643003. The reversal of 11143643001 is 10034634111.

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: 10034634111 = 3 ⋅3344878037.

It is a cyclic number.

It is not a de Polignac number, because 11143643001 - 2⁵ = 11143642969 is a prime.

It is a super-3 number, since 3×11143643001³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11143643003) 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, 1857273831 + ... + 1857273836.

It is an arithmetic number, because the mean of its divisors is an integer number (3714547668).

Almost surely, 2^11143643001 is an apocalyptic number.

It is an amenable number.

11143643001 is a deficient number, since it is larger than the sum of its proper divisors (3714547671).

11143643001 is an equidigital number, since it uses as much as digits as its factorization.

11143643001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714547670.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 11143643001 in words is "eleven billion, one hundred forty-three million, six hundred forty-three thousand, one".