1666076430528 has 84 divisors (see below), whose sum is σ = 4898113917240. Its totient is φ = 555340924800.

The previous prime is 1666076430523. The next prime is 1666076430547. The reversal of 1666076430528 is 8250346706661.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a super-2 number, since 2×1666076430528² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1666076430523) 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, 53640603 + ... + 53671653.

Almost surely, 2^{1666076430528} is an apocalyptic number.

1666076430528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1666076430528 is an abundant number, since it is smaller than the sum of its proper divisors (3232037486712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666076430528 is an frugal number, since it uses more digits than its factorization.

1666076430528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62123 (or 31056 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 1666076430528 in words is "one trillion, six hundred sixty-six billion, seventy-six million, four hundred thirty thousand, five hundred twenty-eight".