20021060672660 has 48 divisors (see below), whose sum is σ = 43425168568320. Its totient is φ = 7745681617920.

The previous prime is 20021060672623. The next prime is 20021060672681. The reversal of 20021060672660 is 6627606012002.

It is a congruent number.

It is an unprimeable number.

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, 8088509 + ... + 10269668.

It is an arithmetic number, because the mean of its divisors is an integer number (904691011840).

Almost surely, 2^{20021060672660} is an apocalyptic number.

20021060672660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021060672660 is an abundant number, since it is smaller than the sum of its proper divisors (23404107895660).

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

20021060672660 is a wasteful number, since it uses less digits than its factorization.

20021060672660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18359976 (or 18359974 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 20021060672660 its reverse (6627606012002), we get a palindrome (26648666684662).

The spelling of 20021060672660 in words is "twenty trillion, twenty-one billion, sixty million, six hundred seventy-two thousand, six hundred sixty".