42512455567 has 2 divisors, whose sum is σ = 42512455568. Its totient is φ = 42512455566.

The previous prime is 42512455549. The next prime is 42512455589. The reversal of 42512455567 is 76555421524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42512455567 is a prime.

It is a super-2 number, since 2×42512455567² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42512455967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256227783 + 21256227784.

It is an arithmetic number, because the mean of its divisors is an integer number (21256227784).

Almost surely, 2^42512455567 is an apocalyptic number.

42512455567 is a deficient number, since it is larger than the sum of its proper divisors (1).

42512455567 is an equidigital number, since it uses as much as digits as its factorization.

42512455567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680000, while the sum is 46.

The spelling of 42512455567 in words is "forty-two billion, five hundred twelve million, four hundred fifty-five thousand, five hundred sixty-seven".