20660362320 has 80 divisors (see below), whose sum is σ = 68973835392. Its totient is φ = 5085626880.

The previous prime is 20660362273. The next prime is 20660362369. The reversal of 20660362320 is 2326306602.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 3307836 + ... + 3314075.

Almost surely, 2^20660362320 is an apocalyptic number.

20660362320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20660362320 is an abundant number, since it is smaller than the sum of its proper divisors (48313473072).

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

20660362320 is a wasteful number, since it uses less digits than its factorization.

20660362320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621940 (or 6621934 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 20660362320 its reverse (2326306602), we get a palindrome (22986668922).

The spelling of 20660362320 in words is "twenty billion, six hundred sixty million, three hundred sixty-two thousand, three hundred twenty".