1685900911052 has 12 divisors (see below), whose sum is σ = 2950353252840. Its totient is φ = 842942838816.

The previous prime is 1685900911031. The next prime is 1685900911063. The reversal of 1685900911052 is 2501190095861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1685900910988 and 1685900911006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390778 + ... + 2303489.

It is an arithmetic number, because the mean of its divisors is an integer number (245862771070).

Almost surely, 2^{1685900911052} is an apocalyptic number.

It is an amenable number.

1685900911052 is a deficient number, since it is larger than the sum of its proper divisors (1264452341788).

1685900911052 is a wasteful number, since it uses less digits than its factorization.

1685900911052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808360 (or 3808358 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 47.

It can be divided in two parts, 1685900 and 911052, that added together give a palindrome (2596952).

The spelling of 1685900911052 in words is "one trillion, six hundred eighty-five billion, nine hundred million, nine hundred eleven thousand, fifty-two".