21075153464129 has 8 divisors (see below), whose sum is σ = 21763119861120. Its totient is φ = 20396180092176.

The previous prime is 21075153464069. The next prime is 21075153464137. The reversal of 21075153464129 is 92146435157012.

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 21075153464129 - 2⁴⁴ = 3482967419713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21075153464149) 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 7 ways as a sum of consecutive naturals, for example, 2248251497 + ... + 2248260870.

It is an arithmetic number, because the mean of its divisors is an integer number (2720389982640).

Almost surely, 2^{21075153464129} is an apocalyptic number.

It is an amenable number.

21075153464129 is a deficient number, since it is larger than the sum of its proper divisors (687966396991).

21075153464129 is a wasteful number, since it uses less digits than its factorization.

21075153464129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496512519.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 21075153464129 in words is "twenty-one trillion, seventy-five billion, one hundred fifty-three million, four hundred sixty-four thousand, one hundred twenty-nine".