18840567390052 has 24 divisors (see below), whose sum is σ = 34113051819000. Its totient is φ = 9094078834176.

The previous prime is 18840567390049. The next prime is 18840567390079. The reversal of 18840567390052 is 25009376504881.

It can be written as a sum of positive squares in 4 ways, for example, as 1044369539136 + 17796197850916 = 1021944^2 + 4218554^2 .

It is a super-3 number, since 3×18840567390052³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (58).

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, 11434677 + ... + 12978172.

It is an arithmetic number, because the mean of its divisors is an integer number (1421377159125).

It is a 1-persistent number, because it is pandigital, but 2⋅18840567390052 = 37681134780104 is not.

Almost surely, 2^{18840567390052} is an apocalyptic number.

It is an amenable number.

18840567390052 is a deficient number, since it is larger than the sum of its proper divisors (15272484428948).

18840567390052 is a wasteful number, since it uses less digits than its factorization.

18840567390052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24419535 (or 24419533 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 18840567390052 in words is "eighteen trillion, eight hundred forty billion, five hundred sixty-seven million, three hundred ninety thousand, fifty-two".