67123135045613 has 4 divisors (see below), whose sum is σ = 67175452377408. Its totient is φ = 67070817713820.

The previous prime is 67123135045597. The next prime is 67123135045627. The reversal of 67123135045613 is 31654053132176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67123135045613 - 2⁴ = 67123135045597 is a prime.

It is a super-3 number, since 3×67123135045613³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67123135045313) 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, 26158663973 + ... + 26158666538.

It is an arithmetic number, because the mean of its divisors is an integer number (16793863094352).

Almost surely, 2^{67123135045613} is an apocalyptic number.

It is an amenable number.

67123135045613 is a deficient number, since it is larger than the sum of its proper divisors (52317331795).

67123135045613 is a wasteful number, since it uses less digits than its factorization.

67123135045613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52317331794.

The product of its (nonzero) digits is 1360800, while the sum is 47.

Adding to 67123135045613 its reverse (31654053132176), we get a palindrome (98777188177789).

The spelling of 67123135045613 in words is "sixty-seven trillion, one hundred twenty-three billion, one hundred thirty-five million, forty-five thousand, six hundred thirteen".