1688514115387 has 12 divisors (see below), whose sum is σ = 1888038409608. Its totient is φ = 1497573478400.

The previous prime is 1688514115319. The next prime is 1688514115403. The reversal of 1688514115387 is 7835114158861.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1688514115387 is a prime.

It is a super-2 number, since 2×1688514115387² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688514115987) 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, 45639238 + ... + 45676219.

It is an arithmetic number, because the mean of its divisors is an integer number (157336534134).

Almost surely, 2^{1688514115387} is an apocalyptic number.

1688514115387 is a deficient number, since it is larger than the sum of its proper divisors (199524294221).

1688514115387 is an equidigital number, since it uses as much as digits as its factorization.

1688514115387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91315550 (or 91315509 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 58.

The spelling of 1688514115387 in words is "one trillion, six hundred eighty-eight billion, five hundred fourteen million, one hundred fifteen thousand, three hundred eighty-seven".