20001142198 has 4 divisors (see below), whose sum is σ = 30001713300. Its totient is φ = 10000571098.

The previous prime is 20001142169. The next prime is 20001142201. The reversal of 20001142198 is 89124110002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000285548 + ... + 5000285551.

It is an arithmetic number, because the mean of its divisors is an integer number (7500428325).

Almost surely, 2^20001142198 is an apocalyptic number.

20001142198 is a deficient number, since it is larger than the sum of its proper divisors (10000571102).

20001142198 is a wasteful number, since it uses less digits than its factorization.

20001142198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000571101.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 20001142198 in words is "twenty billion, one million, one hundred forty-two thousand, one hundred ninety-eight".