42573063287081 has 2 divisors, whose sum is σ = 42573063287082. Its totient is φ = 42573063287080.

The previous prime is 42573063287011. The next prime is 42573063287119. The reversal of 42573063287081 is 18078236037524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34303757877481 + 8269305409600 = 5856941^2 + 2875640^2 .

It is a cyclic number.

It is not a de Polignac number, because 42573063287081 - 2²² = 42573059092777 is a prime.

It is a super-2 number, since 2×42573063287081² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42573063287011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21286531643540 + 21286531643541.

It is an arithmetic number, because the mean of its divisors is an integer number (21286531643541).

Almost surely, 2^{42573063287081} is an apocalyptic number.

It is an amenable number.

42573063287081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42573063287081 is an equidigital number, since it uses as much as digits as its factorization.

42573063287081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 42573063287081 in words is "forty-two trillion, five hundred seventy-three billion, sixty-three million, two hundred eighty-seven thousand, eighty-one".