1687633053557 has 8 divisors (see below), whose sum is σ = 1844897783040. Its totient is φ = 1531008914560.

The previous prime is 1687633053527. The next prime is 1687633053751. The reversal of 1687633053557 is 7553503367861.

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

It is a cyclic number.

It is not a de Polignac number, because 1687633053557 - 2²⁴ = 1687616276341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1687633053496 and 1687633053505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1687633053527) 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, 160142108 + ... + 160152645.

It is an arithmetic number, because the mean of its divisors is an integer number (230612222880).

Almost surely, 2^{1687633053557} is an apocalyptic number.

It is an amenable number.

1687633053557 is a deficient number, since it is larger than the sum of its proper divisors (157264729483).

1687633053557 is a wasteful number, since it uses less digits than its factorization.

1687633053557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320295243.

The product of its (nonzero) digits is 47628000, while the sum is 59.

The spelling of 1687633053557 in words is "one trillion, six hundred eighty-seven billion, six hundred thirty-three million, fifty-three thousand, five hundred fifty-seven".