42564713549 has 2 divisors, whose sum is σ = 42564713550. Its totient is φ = 42564713548.

The previous prime is 42564713483. The next prime is 42564713561. The reversal of 42564713549 is 94531746524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41565015625 + 999697924 = 203875^2 + 31618^2 .

It is a cyclic number.

It is not a de Polignac number, because 42564713549 - 2²⁸ = 42296278093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42564713497 and 42564713506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42564713449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21282356774 + 21282356775.

It is an arithmetic number, because the mean of its divisors is an integer number (21282356775).

Almost surely, 2^42564713549 is an apocalyptic number.

It is an amenable number.

42564713549 is a deficient number, since it is larger than the sum of its proper divisors (1).

42564713549 is an equidigital number, since it uses as much as digits as its factorization.

42564713549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 50.

The spelling of 42564713549 in words is "forty-two billion, five hundred sixty-four million, seven hundred thirteen thousand, five hundred forty-nine".