42767259517 has 2 divisors, whose sum is σ = 42767259518. Its totient is φ = 42767259516.

The previous prime is 42767259503. The next prime is 42767259553. The reversal of 42767259517 is 71595276724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36213709401 + 6553550116 = 190299^2 + 80954^2 .

It is a cyclic number.

It is not a de Polignac number, because 42767259517 - 2¹⁹ = 42766735229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42767259317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21383629758 + 21383629759.

It is an arithmetic number, because the mean of its divisors is an integer number (21383629759).

Almost surely, 2^42767259517 is an apocalyptic number.

It is an amenable number.

42767259517 is a deficient number, since it is larger than the sum of its proper divisors (1).

42767259517 is an equidigital number, since it uses as much as digits as its factorization.

42767259517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7408800, while the sum is 55.

The spelling of 42767259517 in words is "forty-two billion, seven hundred sixty-seven million, two hundred fifty-nine thousand, five hundred seventeen".