542521132581 has 8 divisors (see below), whose sum is σ = 742911821344. Its totient is φ = 351905599440.

The previous prime is 542521132529. The next prime is 542521132589. The reversal of 542521132581 is 185231125245.

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

It is not a de Polignac number, because 542521132581 - 2¹⁰ = 542521131557 is a prime.

It is a super-2 number, since 2×542521132581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542521132589) 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, 2443788775 + ... + 2443788996.

It is an arithmetic number, because the mean of its divisors is an integer number (92863977668).

Almost surely, 2^542521132581 is an apocalyptic number.

It is an amenable number.

542521132581 is a deficient number, since it is larger than the sum of its proper divisors (200390688763).

542521132581 is a wasteful number, since it uses less digits than its factorization.

542521132581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887577811.

The product of its digits is 96000, while the sum is 39.

The spelling of 542521132581 in words is "five hundred forty-two billion, five hundred twenty-one million, one hundred thirty-two thousand, five hundred eighty-one".