67985129419 has 4 divisors (see below), whose sum is σ = 67992953400. Its totient is φ = 67977305440.

The previous prime is 67985129413. The next prime is 67985129441. The reversal of 67985129419 is 91492158976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67985129419 - 2²¹ = 67983032267 is a prime.

It is a super-2 number, since 2×67985129419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67985129413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3898942 + ... + 3916339.

It is an arithmetic number, because the mean of its divisors is an integer number (16998238350).

Almost surely, 2^67985129419 is an apocalyptic number.

67985129419 is a deficient number, since it is larger than the sum of its proper divisors (7823981).

67985129419 is an equidigital number, since it uses as much as digits as its factorization.

67985129419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7823980.

The product of its digits is 9797760, while the sum is 61.

The spelling of 67985129419 in words is "sixty-seven billion, nine hundred eighty-five million, one hundred twenty-nine thousand, four hundred nineteen".