1687764656113 has 8 divisors (see below), whose sum is σ = 1803746286432. Its totient is φ = 1573638732096.

The previous prime is 1687764656099. The next prime is 1687764656131. The reversal of 1687764656113 is 3116564677861.

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-1687764656113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1687764656183) 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, 463924695 + ... + 463928332.

It is an arithmetic number, because the mean of its divisors is an integer number (225468285804).

Almost surely, 2^{1687764656113} is an apocalyptic number.

It is an amenable number.

1687764656113 is a deficient number, since it is larger than the sum of its proper divisors (115981630319).

1687764656113 is a wasteful number, since it uses less digits than its factorization.

1687764656113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927853151.

The product of its digits is 30481920, while the sum is 61.

The spelling of 1687764656113 in words is "one trillion, six hundred eighty-seven billion, seven hundred sixty-four million, six hundred fifty-six thousand, one hundred thirteen".