11203778671 has 8 divisors (see below), whose sum is σ = 11261394144. Its totient is φ = 11146245120.

The previous prime is 11203778633. The next prime is 11203778687. The reversal of 11203778671 is 17687730211.

It is a happy number.

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 11203778671 - 2⁷ = 11203778543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203778071) 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, 263806 + ... + 303316.

It is an arithmetic number, because the mean of its divisors is an integer number (1407674268).

Almost surely, 2^11203778671 is an apocalyptic number.

11203778671 is a deficient number, since it is larger than the sum of its proper divisors (57615473).

11203778671 is a wasteful number, since it uses less digits than its factorization.

11203778671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40961.

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 11203778671 in words is "eleven billion, two hundred three million, seven hundred seventy-eight thousand, six hundred seventy-one".