20682954660 has 24 divisors (see below), whose sum is σ = 57912273216. Its totient is φ = 5515454560.

The previous prime is 20682954637. The next prime is 20682954667. The reversal of 20682954660 is 6645928602.

It is a happy number.

It is a super-2 number, since 2×20682954660² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20682954667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172357896 + ... + 172358015.

It is an arithmetic number, because the mean of its divisors is an integer number (2413011384).

Almost surely, 2^20682954660 is an apocalyptic number.

20682954660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20682954660 is an abundant number, since it is smaller than the sum of its proper divisors (37229318556).

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

20682954660 is a wasteful number, since it uses less digits than its factorization.

20682954660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344715923 (or 344715921 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 20682954660 in words is "twenty billion, six hundred eighty-two million, nine hundred fifty-four thousand, six hundred sixty".