66898284537 has 24 divisors (see below), whose sum is σ = 106173651936. Its totient is φ = 37338573888.

The previous prime is 66898284527. The next prime is 66898284539. The reversal of 66898284537 is 73548289866.

It is not a de Polignac number, because 66898284537 - 2¹⁰ = 66898283513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66898284539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5285428 + ... + 5298069.

It is an arithmetic number, because the mean of its divisors is an integer number (4423902164).

Almost surely, 2^66898284537 is an apocalyptic number.

It is an amenable number.

66898284537 is a deficient number, since it is larger than the sum of its proper divisors (39275367399).

66898284537 is a wasteful number, since it uses less digits than its factorization.

66898284537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583557 (or 10583550 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 66.

The spelling of 66898284537 in words is "sixty-six billion, eight hundred ninety-eight million, two hundred eighty-four thousand, five hundred thirty-seven".