11998019143 has 24 divisors (see below), whose sum is σ = 13634293904. Its totient is φ = 10543357440.

The previous prime is 11998019027. The next prime is 11998019153. The reversal of 11998019143 is 34191089911.

It is not a de Polignac number, because 11998019143 - 2⁹ = 11998018631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11998019093 and 11998019102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11998019153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492805 + ... + 516577.

Almost surely, 2^11998019143 is an apocalyptic number.

11998019143 is a deficient number, since it is larger than the sum of its proper divisors (1636274761).

11998019143 is a wasteful number, since it uses less digits than its factorization.

11998019143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23935 (or 23924 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 46.

The spelling of 11998019143 in words is "eleven billion, nine hundred ninety-eight million, nineteen thousand, one hundred forty-three".