21612310716417 has 8 divisors (see below), whose sum is σ = 28816480627200. Its totient is φ = 14408173974960.

The previous prime is 21612310716397. The next prime is 21612310716443. The reversal of 21612310716417 is 71461701321612.

It is a happy number.

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

It is not a de Polignac number, because 21612310716417 - 2¹⁴ = 21612310700033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21612310716617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6729934 + ... + 9408327.

It is an arithmetic number, because the mean of its divisors is an integer number (3602060078400).

Almost surely, 2^{21612310716417} is an apocalyptic number.

It is an amenable number.

21612310716417 is a deficient number, since it is larger than the sum of its proper divisors (7204169910783).

21612310716417 is a wasteful number, since it uses less digits than its factorization.

21612310716417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16584663.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 21612310716417 in words is "twenty-one trillion, six hundred twelve billion, three hundred ten million, seven hundred sixteen thousand, four hundred seventeen".