1685168370020 has 24 divisors (see below), whose sum is σ = 3539408611200. Its totient is φ = 673961627232.

The previous prime is 1685168369971. The next prime is 1685168370049. The reversal of 1685168370020 is 200738615861.

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, 6476780 + ... + 6731939.

It is an arithmetic number, because the mean of its divisors is an integer number (147475358800).

Almost surely, 2^{1685168370020} is an apocalyptic number.

1685168370020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1685168370020 is an abundant number, since it is smaller than the sum of its proper divisors (1854240241180).

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

1685168370020 is a wasteful number, since it uses less digits than its factorization.

1685168370020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13215107 (or 13215105 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 1685168370020 in words is "one trillion, six hundred eighty-five billion, one hundred sixty-eight million, three hundred seventy thousand, twenty".