67145139959 has 2 divisors, whose sum is σ = 67145139960. Its totient is φ = 67145139958.

The previous prime is 67145139947. The next prime is 67145139973. The reversal of 67145139959 is 95993154176.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67145139959 is a prime.

It is a super-2 number, since 2×67145139959² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67145139898 and 67145139907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67145139059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33572569979 + 33572569980.

It is an arithmetic number, because the mean of its divisors is an integer number (33572569980).

Almost surely, 2^67145139959 is an apocalyptic number.

67145139959 is a deficient number, since it is larger than the sum of its proper divisors (1).

67145139959 is an equidigital number, since it uses as much as digits as its factorization.

67145139959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9185400, while the sum is 59.

The spelling of 67145139959 in words is "sixty-seven billion, one hundred forty-five million, one hundred thirty-nine thousand, nine hundred fifty-nine".