21343253298 has 8 divisors (see below), whose sum is σ = 42686506608. Its totient is φ = 7114417764.

The previous prime is 21343253293. The next prime is 21343253303. The reversal of 21343253298 is 89235234312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21343253293) and next prime (21343253303).

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

21343253298 is an admirable number.

It is a super-2 number, since 2×21343253298² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21343253291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1778604436 + ... + 1778604447.

It is an arithmetic number, because the mean of its divisors is an integer number (5335813326).

Almost surely, 2^21343253298 is an apocalyptic number.

21343253298 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21343253298 is a wasteful number, since it uses less digits than its factorization.

21343253298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557208888.

The product of its digits is 311040, while the sum is 42.

The spelling of 21343253298 in words is "twenty-one billion, three hundred forty-three million, two hundred fifty-three thousand, two hundred ninety-eight".