18719712052 has 24 divisors (see below), whose sum is σ = 34191360000. Its totient is φ = 8950931616.

The previous prime is 18719711947. The next prime is 18719712071. The reversal of 18719712052 is 25021791781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451074 + ... + 490822.

It is an arithmetic number, because the mean of its divisors is an integer number (1424640000).

Almost surely, 2^18719712052 is an apocalyptic number.

It is an amenable number.

18719712052 is a deficient number, since it is larger than the sum of its proper divisors (15471647948).

18719712052 is a wasteful number, since it uses less digits than its factorization.

18719712052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44895 (or 44893 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 43.

The spelling of 18719712052 in words is "eighteen billion, seven hundred nineteen million, seven hundred twelve thousand, fifty-two".