66540483230 has 48 divisors (see below), whose sum is σ = 129882209184. Its totient is φ = 24533308800.

The previous prime is 66540483221. The next prime is 66540483239. The reversal of 66540483230 is 3238404566.

It is an interprime number because it is at equal distance from previous prime (66540483221) and next prime (66540483239).

It is a super-2 number, since 2×66540483230² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66540483239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1156607 + ... + 1212773.

It is an arithmetic number, because the mean of its divisors is an integer number (2705879358).

Almost surely, 2^66540483230 is an apocalyptic number.

66540483230 is a deficient number, since it is larger than the sum of its proper divisors (63341725954).

66540483230 is a wasteful number, since it uses less digits than its factorization.

66540483230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56901 (or 56888 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

Adding to 66540483230 its reverse (3238404566), we get a palindrome (69778887796).

The spelling of 66540483230 in words is "sixty-six billion, five hundred forty million, four hundred eighty-three thousand, two hundred thirty".