21272259832 has 8 divisors (see below), whose sum is σ = 39885487200. Its totient is φ = 10636129912.

The previous prime is 21272259809. The next prime is 21272259839. The reversal of 21272259832 is 23895227212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21272259839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329516232 + ... + 1329516247.

It is an arithmetic number, because the mean of its divisors is an integer number (4985685900).

Almost surely, 2^21272259832 is an apocalyptic number.

It is an amenable number.

21272259832 is a deficient number, since it is larger than the sum of its proper divisors (18613227368).

21272259832 is a wasteful number, since it uses less digits than its factorization.

21272259832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659032485 (or 2659032481 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The spelling of 21272259832 in words is "twenty-one billion, two hundred seventy-two million, two hundred fifty-nine thousand, eight hundred thirty-two".