21443514535099 has 4 divisors (see below), whose sum is σ = 22704897743064. Its totient is φ = 20182131327136.

The previous prime is 21443514535081. The next prime is 21443514535103. The reversal of 21443514535099 is 99053541534412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21443514535099 - 2⁵ = 21443514535067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21443514530099) by changing a digit.

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, 630691603957 + ... + 630691603990.

It is an arithmetic number, because the mean of its divisors is an integer number (5676224435766).

Almost surely, 2^{21443514535099} is an apocalyptic number.

21443514535099 is a deficient number, since it is larger than the sum of its proper divisors (1261383207965).

21443514535099 is a wasteful number, since it uses less digits than its factorization.

21443514535099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261383207964.

The product of its (nonzero) digits is 11664000, while the sum is 55.

The spelling of 21443514535099 in words is "twenty-one trillion, four hundred forty-three billion, five hundred fourteen million, five hundred thirty-five thousand, ninety-nine".