42167752643 has 2 divisors, whose sum is σ = 42167752644. Its totient is φ = 42167752642.

The previous prime is 42167752637. The next prime is 42167752651. The reversal of 42167752643 is 34625776124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42167752643 - 2³² = 37872785347 is a prime.

It is a super-2 number, since 2×42167752643² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42167752633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21083876321 + 21083876322.

It is an arithmetic number, because the mean of its divisors is an integer number (21083876322).

Almost surely, 2^42167752643 is an apocalyptic number.

42167752643 is a deficient number, since it is larger than the sum of its proper divisors (1).

42167752643 is an equidigital number, since it uses as much as digits as its factorization.

42167752643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 47.

The spelling of 42167752643 in words is "forty-two billion, one hundred sixty-seven million, seven hundred fifty-two thousand, six hundred forty-three".