1686094434425 has 12 divisors (see below), whose sum is σ = 2139379358160. Its totient is φ = 1317506347920.

The previous prime is 1686094434421. The next prime is 1686094434439. The reversal of 1686094434425 is 5244344906861.

It is a happy number.

It is not a de Polignac number, because 1686094434425 - 2² = 1686094434421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1686094434421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784228895 + ... + 784231044.

It is an arithmetic number, because the mean of its divisors is an integer number (178281613180).

Almost surely, 2^{1686094434425} is an apocalyptic number.

It is an amenable number.

1686094434425 is a deficient number, since it is larger than the sum of its proper divisors (453284923735).

1686094434425 is a wasteful number, since it uses less digits than its factorization.

1686094434425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568459992 (or 1568459987 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 56.

The spelling of 1686094434425 in words is "one trillion, six hundred eighty-six billion, ninety-four million, four hundred thirty-four thousand, four hundred twenty-five".