1685431102676 has 6 divisors (see below), whose sum is σ = 2949504429690. Its totient is φ = 842715551336.

The previous prime is 1685431102637. The next prime is 1685431102699. The reversal of 1685431102676 is 6762011345861.

It can be written as a sum of positive squares in only one way, i.e., 1159046028100 + 526385074576 = 1076590^2 + 725524^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 210678887831 + ... + 210678887838.

It is an arithmetic number, because the mean of its divisors is an integer number (491584071615).

Almost surely, 2^{1685431102676} is an apocalyptic number.

It is an amenable number.

1685431102676 is a deficient number, since it is larger than the sum of its proper divisors (1264073327014).

1685431102676 is a wasteful number, since it uses less digits than its factorization.

1685431102676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421357775673 (or 421357775671 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 1685431102676 in words is "one trillion, six hundred eighty-five billion, four hundred thirty-one million, one hundred two thousand, six hundred seventy-six".