66037701580 has 48 divisors (see below), whose sum is σ = 139685049504. Its totient is φ = 26223989760.

The previous prime is 66037701563. The next prime is 66037701589. The reversal of 66037701580 is 8510773066.

It is not an unprimeable number, because it can be changed into a prime (66037701589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131279 + ... + 2162041.

It is an arithmetic number, because the mean of its divisors is an integer number (2910105198).

Almost surely, 2^66037701580 is an apocalyptic number.

It is an amenable number.

66037701580 is an abundant number, since it is smaller than the sum of its proper divisors (73647347924).

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

66037701580 is a wasteful number, since it uses less digits than its factorization.

66037701580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31546 (or 31544 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 66037701580 in words is "sixty-six billion, thirty-seven million, seven hundred one thousand, five hundred eighty".