21132167541 has 8 divisors (see below), whose sum is σ = 28185440544. Its totient is φ = 14083503120.

The previous prime is 21132167503. The next prime is 21132167549. The reversal of 21132167541 is 14576123112.

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

It is not a de Polignac number, because 21132167541 - 2⁹ = 21132167029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132167549) 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, 1141431 + ... + 1159796.

It is an arithmetic number, because the mean of its divisors is an integer number (3523180068).

Almost surely, 2^21132167541 is an apocalyptic number.

It is an amenable number.

21132167541 is a deficient number, since it is larger than the sum of its proper divisors (7053273003).

21132167541 is a wasteful number, since it uses less digits than its factorization.

21132167541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304291.

The product of its digits is 10080, while the sum is 33.

The spelling of 21132167541 in words is "twenty-one billion, one hundred thirty-two million, one hundred sixty-seven thousand, five hundred forty-one".