21357104514 has 8 divisors (see below), whose sum is σ = 42714209040. Its totient is φ = 7119034836.

The previous prime is 21357104497. The next prime is 21357104533. The reversal of 21357104514 is 41540175312.

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

21357104514 is an admirable number.

It is a super-2 number, since 2×21357104514² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779758704 + ... + 1779758715.

It is an arithmetic number, because the mean of its divisors is an integer number (5339276130).

Almost surely, 2^21357104514 is an apocalyptic number.

21357104514 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.

21357104514 is a wasteful number, since it uses less digits than its factorization.

21357104514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559517424.

The product of its (nonzero) digits is 16800, while the sum is 33.

Adding to 21357104514 its reverse (41540175312), we get a palindrome (62897279826).

The spelling of 21357104514 in words is "twenty-one billion, three hundred fifty-seven million, one hundred four thousand, five hundred fourteen".