11143509990 has 32 divisors (see below), whose sum is σ = 26772733440. Its totient is φ = 2968457184.

The previous prime is 11143509989. The next prime is 11143509991. The reversal of 11143509990 is 9990534111.

It is an interprime number because it is at equal distance from previous prime (11143509989) and next prime (11143509991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143509991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167710 + ... + 224529.

It is an arithmetic number, because the mean of its divisors is an integer number (836647920).

Almost surely, 2^11143509990 is an apocalyptic number.

11143509990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11143509990 is an abundant number, since it is smaller than the sum of its proper divisors (15629223450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11143509990 is a wasteful number, since it uses less digits than its factorization.

11143509990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393196.

The product of its (nonzero) digits is 43740, while the sum is 42.

The spelling of 11143509990 in words is "eleven billion, one hundred forty-three million, five hundred nine thousand, nine hundred ninety".