21574514741 has 16 divisors (see below), whose sum is σ = 23869469568. Its totient is φ = 19370664000.

The previous prime is 21574514713. The next prime is 21574514777. The reversal of 21574514741 is 14741547512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21574514741 - 2¹⁰ = 21574513717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21574514711) by changing a digit.

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, 2405816 + ... + 2414766.

It is an arithmetic number, because the mean of its divisors is an integer number (1491841848).

Almost surely, 2^21574514741 is an apocalyptic number.

It is an amenable number.

21574514741 is a deficient number, since it is larger than the sum of its proper divisors (2294954827).

21574514741 is a wasteful number, since it uses less digits than its factorization.

21574514741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14012.

The product of its digits is 156800, while the sum is 41.

The spelling of 21574514741 in words is "twenty-one billion, five hundred seventy-four million, five hundred fourteen thousand, seven hundred forty-one".