21417603241 has 8 divisors (see below), whose sum is σ = 21492258984. Its totient is φ = 21343027200.

The previous prime is 21417603239. The next prime is 21417603281. The reversal of 21417603241 is 14230671412.

It can be written as a sum of positive squares in 4 ways, for example, as 2768969641 + 18648633600 = 52621^2 + 136560^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21417603241 - 2¹ = 21417603239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21417603281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546205 + ... + 584101.

It is an arithmetic number, because the mean of its divisors is an integer number (2686532373).

Almost surely, 2^21417603241 is an apocalyptic number.

It is an amenable number.

21417603241 is a deficient number, since it is larger than the sum of its proper divisors (74655743).

21417603241 is a wasteful number, since it uses less digits than its factorization.

21417603241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39851.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 21417603241 in words is "twenty-one billion, four hundred seventeen million, six hundred three thousand, two hundred forty-one".