21470071664041 has 64 divisors (see below), whose sum is σ = 29514331478016. Its totient is φ = 15075181900800.

The previous prime is 21470071664039. The next prime is 21470071664053. The reversal of 21470071664041 is 14046617007412.

It is not a de Polignac number, because 21470071664041 - 2¹ = 21470071664039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (21470071664141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75053361 + ... + 75338881.

It is an arithmetic number, because the mean of its divisors is an integer number (461161429344).

Almost surely, 2^{21470071664041} is an apocalyptic number.

It is an amenable number.

21470071664041 is a deficient number, since it is larger than the sum of its proper divisors (8044259813975).

21470071664041 is a wasteful number, since it uses less digits than its factorization.

21470071664041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287342.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 21470071664041 in words is "twenty-one trillion, four hundred seventy billion, seventy-one million, six hundred sixty-four thousand, forty-one".