20660340654330 has 64 divisors (see below), whose sum is σ = 53399516163840. Its totient is φ = 5085576423936.

The previous prime is 20660340654269. The next prime is 20660340654379. The reversal of 20660340654330 is 3345604306602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67930179 + ... + 68233641.

It is an arithmetic number, because the mean of its divisors is an integer number (834367440060).

Almost surely, 2^{20660340654330} is an apocalyptic number.

20660340654330 is an abundant number, since it is smaller than the sum of its proper divisors (32739175509510).

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

20660340654330 is a wasteful number, since it uses less digits than its factorization.

20660340654330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478055.

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 20660340654330 in words is "twenty trillion, six hundred sixty billion, three hundred forty million, six hundred fifty-four thousand, three hundred thirty".