21306880683060 has 192 divisors, whose sum is σ = 70686504935424. Its totient is φ = 4694114534400.

The previous prime is 21306880683047. The next prime is 21306880683073. The reversal of 21306880683060 is 6038608860312.

It is an interprime number because it is at equal distance from previous prime (21306880683047) and next prime (21306880683073).

It is a junction number, because it is equal to n+sod(n) for n = 21306880682994 and 21306880683012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6024556 + ... + 8883075.

It is an arithmetic number, because the mean of its divisors is an integer number (368158879872).

Almost surely, 2^{21306880683060} is an apocalyptic number.

21306880683060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21306880683060 is an abundant number, since it is smaller than the sum of its proper divisors (49379624252364).

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

21306880683060 is a wasteful number, since it uses less digits than its factorization.

21306880683060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14907774 (or 14907772 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 21306880683060 in words is "twenty-one trillion, three hundred six billion, eight hundred eighty million, six hundred eighty-three thousand, sixty".