20719144118 has 4 divisors (see below), whose sum is σ = 31078716180. Its totient is φ = 10359572058.

The previous prime is 20719144093. The next prime is 20719144133. The reversal of 20719144118 is 81144191702.

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, 5179786028 + ... + 5179786031.

It is an arithmetic number, because the mean of its divisors is an integer number (7769679045).

Almost surely, 2^20719144118 is an apocalyptic number.

20719144118 is a deficient number, since it is larger than the sum of its proper divisors (10359572062).

20719144118 is a wasteful number, since it uses less digits than its factorization.

20719144118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359572061.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 20719144118 in words is "twenty billion, seven hundred nineteen million, one hundred forty-four thousand, one hundred eighteen".