18720052052 has 24 divisors (see below), whose sum is σ = 35286863136. Its totient is φ = 8638367328.

The previous prime is 18720052031. The next prime is 18720052063. The reversal of 18720052052 is 25025002781.

It is a happy number.

18720052052 is a modest number, since divided by 52052 gives 18720 as remainder.

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, 263843 + ... + 327189.

It is an arithmetic number, because the mean of its divisors is an integer number (1470285964).

Almost surely, 2^18720052052 is an apocalyptic number.

It is an amenable number.

18720052052 is a deficient number, since it is larger than the sum of its proper divisors (16566811084).

18720052052 is a wasteful number, since it uses less digits than its factorization.

18720052052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69047 (or 69045 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The spelling of 18720052052 in words is "eighteen billion, seven hundred twenty million, fifty-two thousand, fifty-two".