21589275712 has 14 divisors (see below), whose sum is σ = 42841219118. Its totient is φ = 10794637824.

The previous prime is 21589275691. The next prime is 21589275713. The reversal of 21589275712 is 21757298512.

It can be written as a sum of positive squares in only one way, i.e., 21369761856 + 219513856 = 146184^2 + 14816^2 .

It is not an unprimeable number, because it can be changed into a prime (21589275713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168666153 + ... + 168666280.

Almost surely, 2^21589275712 is an apocalyptic number.

It is an amenable number.

21589275712 is a deficient number, since it is larger than the sum of its proper divisors (21251943406).

21589275712 is an equidigital number, since it uses as much as digits as its factorization.

21589275712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337332445 (or 337332435 counting only the distinct ones).

The product of its digits is 705600, while the sum is 49.

The spelling of 21589275712 in words is "twenty-one billion, five hundred eighty-nine million, two hundred seventy-five thousand, seven hundred twelve".