67856136043 has 2 divisors, whose sum is σ = 67856136044. Its totient is φ = 67856136042.

The previous prime is 67856136037. The next prime is 67856136067. The reversal of 67856136043 is 34063165876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67856136043 - 2²⁵ = 67822581611 is a prime.

It is a super-2 number, since 2×67856136043² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67856136143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33928068021 + 33928068022.

It is an arithmetic number, because the mean of its divisors is an integer number (33928068022).

Almost surely, 2^67856136043 is an apocalyptic number.

67856136043 is a deficient number, since it is larger than the sum of its proper divisors (1).

67856136043 is an equidigital number, since it uses as much as digits as its factorization.

67856136043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 67856136043 in words is "sixty-seven billion, eight hundred fifty-six million, one hundred thirty-six thousand, forty-three".