21741326472 has 64 divisors (see below), whose sum is σ = 58546114560. Its totient is φ = 6708398400.

The previous prime is 21741326459. The next prime is 21741326527. The reversal of 21741326472 is 27462314712.

It is a self number, because there is not a number n which added to its sum of digits gives 21741326472.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618154 + ... + 652377.

It is an arithmetic number, because the mean of its divisors is an integer number (914783040).

Almost surely, 2^21741326472 is an apocalyptic number.

It is an amenable number.

21741326472 is an abundant number, since it is smaller than the sum of its proper divisors (36804788088).

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

21741326472 is a wasteful number, since it uses less digits than its factorization.

21741326472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270594 (or 1270590 counting only the distinct ones).

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

The spelling of 21741326472 in words is "twenty-one billion, seven hundred forty-one million, three hundred twenty-six thousand, four hundred seventy-two".