21711374712 has 96 divisors (see below), whose sum is σ = 59628441600. Its totient is φ = 7135622208.

The previous prime is 21711374701. The next prime is 21711374717. The reversal of 21711374712 is 21747311712.

21711374712 is a `hidden beast` number, since 2 + 171 + 13 + 7 + 471 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21711374717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4906533 + ... + 4910955.

It is an arithmetic number, because the mean of its divisors is an integer number (621129600).

Almost surely, 2^21711374712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21711374712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29814220800).

21711374712 is an abundant number, since it is smaller than the sum of its proper divisors (37917066888).

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

21711374712 is a wasteful number, since it uses less digits than its factorization.

21711374712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5377 (or 5370 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

Subtracting 21711374712 from its reverse (21747311712), we obtain a cube (35937000 = 330³).

The spelling of 21711374712 in words is "twenty-one billion, seven hundred eleven million, three hundred seventy-four thousand, seven hundred twelve".