542529681761 has 2 divisors, whose sum is σ = 542529681762. Its totient is φ = 542529681760.

The previous prime is 542529681751. The next prime is 542529681857. The reversal of 542529681761 is 167186925245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456900291136 + 85629390625 = 675944^2 + 292625^2 .

It is a cyclic number.

It is not a de Polignac number, because 542529681761 - 2⁶ = 542529681697 is a prime.

It is a super-2 number, since 2×542529681761² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542529681697 and 542529681706.

It is not a weakly prime, because it can be changed into another prime (542529681751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271264840880 + 271264840881.

It is an arithmetic number, because the mean of its divisors is an integer number (271264840881).

Almost surely, 2^542529681761 is an apocalyptic number.

It is an amenable number.

542529681761 is a deficient number, since it is larger than the sum of its proper divisors (1).

542529681761 is an equidigital number, since it uses as much as digits as its factorization.

542529681761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 56.

The spelling of 542529681761 in words is "five hundred forty-two billion, five hundred twenty-nine million, six hundred eighty-one thousand, seven hundred sixty-one".