21346827320369 has 8 divisors (see below), whose sum is σ = 21834710707968. Its totient is φ = 20860347915040.

The previous prime is 21346827320363. The next prime is 21346827320387. The reversal of 21346827320369 is 96302372864312.

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 21346827320369 - 2¹⁶ = 21346827254833 is a prime.

It is a super-2 number, since 2×21346827320369² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21346827320363) 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, 350964812 + ... + 351025629.

It is an arithmetic number, because the mean of its divisors is an integer number (2729338838496).

Almost surely, 2^{21346827320369} is an apocalyptic number.

It is an amenable number.

21346827320369 is a deficient number, since it is larger than the sum of its proper divisors (487883387599).

21346827320369 is an equidigital number, since it uses as much as digits as its factorization.

21346827320369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701991135.

The product of its (nonzero) digits is 15676416, while the sum is 56.

The spelling of 21346827320369 in words is "twenty-one trillion, three hundred forty-six billion, eight hundred twenty-seven million, three hundred twenty thousand, three hundred sixty-nine".