1685426431012 has 96 divisors (see below), whose sum is σ = 3392994334464. Its totient is φ = 728018227200.

The previous prime is 1685426431009. The next prime is 1685426431079. The reversal of 1685426431012 is 2101346245861.

It is a self number, because there is not a number n which added to its sum of digits gives 1685426431012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3696123 + ... + 4127005.

It is an arithmetic number, because the mean of its divisors is an integer number (35343690984).

Almost surely, 2^{1685426431012} is an apocalyptic number.

It is an amenable number.

1685426431012 is an abundant number, since it is smaller than the sum of its proper divisors (1707567903452).

1685426431012 is a wasteful number, since it uses less digits than its factorization.

1685426431012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431029 (or 431027 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 1685426431012 in words is "one trillion, six hundred eighty-five billion, four hundred twenty-six million, four hundred thirty-one thousand, twelve".