1687313126429 has 8 divisors (see below), whose sum is σ = 1935473572608. Its totient is φ = 1440931608720.

The previous prime is 1687313126419. The next prime is 1687313126461. The reversal of 1687313126429 is 9246213137861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1687313126429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1687313126419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444730082 + ... + 444733875.

It is an arithmetic number, because the mean of its divisors is an integer number (241934196576).

Almost surely, 2^{1687313126429} is an apocalyptic number.

It is an amenable number.

1687313126429 is a deficient number, since it is larger than the sum of its proper divisors (248160446179).

1687313126429 is an equidigital number, since it uses as much as digits as its factorization.

1687313126429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889464235.

The product of its digits is 2612736, while the sum is 53.

The spelling of 1687313126429 in words is "one trillion, six hundred eighty-seven billion, three hundred thirteen million, one hundred twenty-six thousand, four hundred twenty-nine".