4987665543321 has 12 divisors (see below), whose sum is σ = 7207103088640. Its totient is φ = 3323865452760.

The previous prime is 4987665543293. The next prime is 4987665543323. The reversal of 4987665543321 is 1233455667894.

4987665543321 is a `hidden beast` number, since 4 + 9 + 8 + 7 + 6 + 65 + 543 + 3 + 21 = 666.

It is not a de Polignac number, because 4987665543321 - 2²⁶ = 4987598434457 is a prime.

It is a super-2 number, since 2×4987665543321² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4987665543323) 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, 103717081 + ... + 103765158.

Almost surely, 2^{4987665543321} is an apocalyptic number.

It is an amenable number.

4987665543321 is a deficient number, since it is larger than the sum of its proper divisors (2219437545319).

4987665543321 is a wasteful number, since it uses less digits than its factorization.

4987665543321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207484916 (or 207484913 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 63.

The spelling of 4987665543321 in words is "four trillion, nine hundred eighty-seven billion, six hundred sixty-five million, five hundred forty-three thousand, three hundred twenty-one".