67613036123 has 4 divisors (see below), whose sum is σ = 71590273560. Its totient is φ = 63635798688.

The previous prime is 67613036077. The next prime is 67613036149. The reversal of 67613036123 is 32163031676.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67613036123 is a prime.

It is a super-2 number, since 2×67613036123² (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 (67613066123) 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, 1988618693 + ... + 1988618726.

It is an arithmetic number, because the mean of its divisors is an integer number (17897568390).

Almost surely, 2^67613036123 is an apocalyptic number.

67613036123 is a deficient number, since it is larger than the sum of its proper divisors (3977237437).

67613036123 is a wasteful number, since it uses less digits than its factorization.

67613036123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977237436.

The product of its (nonzero) digits is 81648, while the sum is 38.

Adding to 67613036123 its reverse (32163031676), we get a palindrome (99776067799).

The spelling of 67613036123 in words is "sixty-seven billion, six hundred thirteen million, thirty-six thousand, one hundred twenty-three".