21611241362759 has 8 divisors (see below), whose sum is σ = 22882531632768. Its totient is φ = 20339955623680.

The previous prime is 21611241362741. The next prime is 21611241362761. The reversal of 21611241362759 is 95726314211612.

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 21611241362759 - 2²⁸ = 21610972927303 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 (21611241362159) 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, 16787819 + ... + 18029235.

It is an arithmetic number, because the mean of its divisors is an integer number (2860316454096).

Almost surely, 2^{21611241362759} is an apocalyptic number.

21611241362759 is a deficient number, since it is larger than the sum of its proper divisors (1271290270009).

21611241362759 is a wasteful number, since it uses less digits than its factorization.

21611241362759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265465.

The product of its digits is 1088640, while the sum is 50.

The spelling of 21611241362759 in words is "twenty-one trillion, six hundred eleven billion, two hundred forty-one million, three hundred sixty-two thousand, seven hundred fifty-nine".