21272627262 has 32 divisors (see below), whose sum is σ = 43452984960. Its totient is φ = 6941155680.

The previous prime is 21272627249. The next prime is 21272627263. The reversal of 21272627262 is 26272627212.

It is a self number, because there is not a number n which added to its sum of digits gives 21272627262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21272627263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141664 + ... + 250227.

It is an arithmetic number, because the mean of its divisors is an integer number (1357905780).

Almost surely, 2^21272627262 is an apocalyptic number.

21272627262 is an abundant number, since it is smaller than the sum of its proper divisors (22180357698).

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

21272627262 is a wasteful number, since it uses less digits than its factorization.

21272627262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392088.

The product of its digits is 112896, while the sum is 39.

The spelling of 21272627262 in words is "twenty-one billion, two hundred seventy-two million, six hundred twenty-seven thousand, two hundred sixty-two".