21741306522 has 32 divisors (see below), whose sum is σ = 46944273600. Its totient is φ = 6672940800.

The previous prime is 21741306493. The next prime is 21741306563. The reversal of 21741306522 is 22560314712.

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, 316272 + ... + 378827.

It is an arithmetic number, because the mean of its divisors is an integer number (1467008550).

Almost surely, 2^21741306522 is an apocalyptic number.

21741306522 is an abundant number, since it is smaller than the sum of its proper divisors (25202967078).

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

21741306522 is a wasteful number, since it uses less digits than its factorization.

21741306522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695518.

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

The spelling of 21741306522 in words is "twenty-one billion, seven hundred forty-one million, three hundred six thousand, five hundred twenty-two".