542581520829 has 16 divisors (see below), whose sum is σ = 750406907712. Its totient is φ = 348469043328.

The previous prime is 542581520813. The next prime is 542581520933. The reversal of 542581520829 is 928025185245.

It is a happy number.

It is not a de Polignac number, because 542581520829 - 2⁴ = 542581520813 is a prime.

It is a super-2 number, since 2×542581520829² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542581520729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28799202 + ... + 28818035.

It is an arithmetic number, because the mean of its divisors is an integer number (46900431732).

Almost surely, 2^542581520829 is an apocalyptic number.

It is an amenable number.

542581520829 is a deficient number, since it is larger than the sum of its proper divisors (207825386883).

542581520829 is a wasteful number, since it uses less digits than its factorization.

542581520829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57617356.

The product of its (nonzero) digits is 2304000, while the sum is 51.

The spelling of 542581520829 in words is "five hundred forty-two billion, five hundred eighty-one million, five hundred twenty thousand, eight hundred twenty-nine".