21272250632 has 16 divisors (see below), whose sum is σ = 40149614400. Its totient is φ = 10565686800.

The previous prime is 21272250617. The next prime is 21272250673. The reversal of 21272250632 is 23605227212.

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 3 ways as a sum of consecutive naturals, for example, 8803532 + ... + 8805947.

It is an arithmetic number, because the mean of its divisors is an integer number (2509350900).

Almost surely, 2^21272250632 is an apocalyptic number.

It is an amenable number.

21272250632 is a deficient number, since it is larger than the sum of its proper divisors (18877363768).

21272250632 is a wasteful number, since it uses less digits than its factorization.

21272250632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17609636 (or 17609632 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 21272250632 its reverse (23605227212), we get a palindrome (44877477844).

The spelling of 21272250632 in words is "twenty-one billion, two hundred seventy-two million, two hundred fifty thousand, six hundred thirty-two".