18351685011876 has 24 divisors (see below), whose sum is σ = 42837384241344. Its totient is φ = 6114830354400.

The previous prime is 18351685011817. The next prime is 18351685011887. The reversal of 18351685011876 is 67811058615381.

It is a happy number.

It is a super-2 number, since 2×18351685011876² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299715975 + ... + 299777198.

It is an arithmetic number, because the mean of its divisors is an integer number (1784891010056).

Almost surely, 2^{18351685011876} is an apocalyptic number.

It is an amenable number.

18351685011876 is an abundant number, since it is smaller than the sum of its proper divisors (24485699229468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18351685011876 is a wasteful number, since it uses less digits than its factorization.

18351685011876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599495731 (or 599495729 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 60.

The spelling of 18351685011876 in words is "eighteen trillion, three hundred fifty-one billion, six hundred eighty-five million, eleven thousand, eight hundred seventy-six".