42482656639 has 2 divisors, whose sum is σ = 42482656640. Its totient is φ = 42482656638.

The previous prime is 42482656603. The next prime is 42482656661. The reversal of 42482656639 is 93665628424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42482656639 - 2⁹ = 42482656127 is a prime.

It is a super-2 number, since 2×42482656639² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42482656639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42482656679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21241328319 + 21241328320.

It is an arithmetic number, because the mean of its divisors is an integer number (21241328320).

Almost surely, 2^42482656639 is an apocalyptic number.

42482656639 is a deficient number, since it is larger than the sum of its proper divisors (1).

42482656639 is an equidigital number, since it uses as much as digits as its factorization.

42482656639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 55.

The spelling of 42482656639 in words is "forty-two billion, four hundred eighty-two million, six hundred fifty-six thousand, six hundred thirty-nine".