21709059072260 has 48 divisors (see below), whose sum is σ = 52102361566080. Its totient is φ = 7443017425920.

The previous prime is 21709059072257. The next prime is 21709059072301. The reversal of 21709059072260 is 6227095090712.

It is a junction number, because it is equal to n+sod(n) for n = 21709059072199 and 21709059072208.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11482295 + ... + 13238625.

It is an arithmetic number, because the mean of its divisors is an integer number (1085465865960).

Almost surely, 2^{21709059072260} is an apocalyptic number.

21709059072260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21709059072260 is an abundant number, since it is smaller than the sum of its proper divisors (30393302493820).

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

21709059072260 is a wasteful number, since it uses less digits than its factorization.

21709059072260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844636 (or 1844634 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 21709059072260 in words is "twenty-one trillion, seven hundred nine billion, fifty-nine million, seventy-two thousand, two hundred sixty".