42561532337 has 2 divisors, whose sum is σ = 42561532338. Its totient is φ = 42561532336.

The previous prime is 42561532313. The next prime is 42561532373. The reversal of 42561532337 is 73323516524.

Together with next prime (42561532373) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42525038656 + 36493681 = 206216^2 + 6041^2 .

It is a cyclic number.

It is not a de Polignac number, because 42561532337 - 2⁸ = 42561532081 is a prime.

It is a super-2 number, since 2×42561532337² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42561532294 and 42561532303.

It is not a weakly prime, because it can be changed into another prime (42561532037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21280766168 + 21280766169.

It is an arithmetic number, because the mean of its divisors is an integer number (21280766169).

Almost surely, 2^42561532337 is an apocalyptic number.

It is an amenable number.

42561532337 is a deficient number, since it is larger than the sum of its proper divisors (1).

42561532337 is an equidigital number, since it uses as much as digits as its factorization.

42561532337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 41.

The spelling of 42561532337 in words is "forty-two billion, five hundred sixty-one million, five hundred thirty-two thousand, three hundred thirty-seven".