21660310593101 has 8 divisors (see below), whose sum is σ = 21666865366080. Its totient is φ = 21653756815968.

The previous prime is 21660310592993. The next prime is 21660310593137. The reversal of 21660310593101 is 10139501306612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21660310593101 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 (21660310593191) 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, 44465480 + ... + 44949966.

It is an arithmetic number, because the mean of its divisors is an integer number (2708358170760).

Almost surely, 2^{21660310593101} is an apocalyptic number.

It is an amenable number.

21660310593101 is a deficient number, since it is larger than the sum of its proper divisors (6554772979).

21660310593101 is an equidigital number, since it uses as much as digits as its factorization.

21660310593101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497923.

The product of its (nonzero) digits is 29160, while the sum is 38.

Adding to 21660310593101 its reverse (10139501306612), we get a palindrome (31799811899713).

The spelling of 21660310593101 in words is "twenty-one trillion, six hundred sixty billion, three hundred ten million, five hundred ninety-three thousand, one hundred one".