21751412334 has 32 divisors (see below), whose sum is σ = 43686314496. Its totient is φ = 7219954560.

The previous prime is 21751412323. The next prime is 21751412341. The reversal of 21751412334 is 43321415712.

It is a junction number, because it is equal to n+sod(n) for n = 21751412295 and 21751412304.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1406854 + ... + 1422230.

It is an arithmetic number, because the mean of its divisors is an integer number (1365197328).

Almost surely, 2^21751412334 is an apocalyptic number.

21751412334 is an abundant number, since it is smaller than the sum of its proper divisors (21934902162).

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

21751412334 is a wasteful number, since it uses less digits than its factorization.

21751412334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16360.

The product of its digits is 20160, while the sum is 33.

The spelling of 21751412334 in words is "twenty-one billion, seven hundred fifty-one million, four hundred twelve thousand, three hundred thirty-four".