21398106469334 has 16 divisors (see below), whose sum is σ = 36684866304000. Its totient is φ = 9170017540584.

The previous prime is 21398106469321. The next prime is 21398106469339. The reversal of 21398106469334 is 43396460189312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21398106469339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49737974 + ... + 50166345.

It is an arithmetic number, because the mean of its divisors is an integer number (2292804144000).

Almost surely, 2^{21398106469334} is an apocalyptic number.

21398106469334 is a deficient number, since it is larger than the sum of its proper divisors (15286759834666).

21398106469334 is a wasteful number, since it uses less digits than its factorization.

21398106469334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99919627.

The product of its (nonzero) digits is 20155392, while the sum is 59.

The spelling of 21398106469334 in words is "twenty-one trillion, three hundred ninety-eight billion, one hundred six million, four hundred sixty-nine thousand, three hundred thirty-four".