66366541560 has 64 divisors (see below), whose sum is σ = 217199594880. Its totient is φ = 16088858240.

The previous prime is 66366541547. The next prime is 66366541573. The reversal of 66366541560 is 6514566366.

It is an interprime number because it is at equal distance from previous prime (66366541547) and next prime (66366541573).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25137522 + ... + 25140161.

It is an arithmetic number, because the mean of its divisors is an integer number (3393743670).

Almost surely, 2^66366541560 is an apocalyptic number.

66366541560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66366541560 is an abundant number, since it is smaller than the sum of its proper divisors (150833053320).

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

66366541560 is a wasteful number, since it uses less digits than its factorization.

66366541560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50277708 (or 50277704 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 66366541560 in words is "sixty-six billion, three hundred sixty-six million, five hundred forty-one thousand, five hundred sixty".