21761711134 has 16 divisors (see below), whose sum is σ = 32948823600. Its totient is φ = 10778811264.

The previous prime is 21761711131. The next prime is 21761711149. The reversal of 21761711134 is 43111716712.

It is a self number, because there is not a number n which added to its sum of digits gives 21761711134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21761711131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708662 + ... + 1721350.

It is an arithmetic number, because the mean of its divisors is an integer number (2059301475).

Almost surely, 2^21761711134 is an apocalyptic number.

21761711134 is a deficient number, since it is larger than the sum of its proper divisors (11187112466).

21761711134 is a wasteful number, since it uses less digits than its factorization.

21761711134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20667.

The product of its digits is 7056, while the sum is 34.

The spelling of 21761711134 in words is "twenty-one billion, seven hundred sixty-one million, seven hundred eleven thousand, one hundred thirty-four".