67698523107071 has 4 divisors (see below), whose sum is σ = 67698559445472. Its totient is φ = 67698486768672.

The previous prime is 67698523107049. The next prime is 67698523107073. The reversal of 67698523107071 is 17070132589676.

It is a happy number.

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 67698523107071 - 2²⁶ = 67698455998207 is a prime.

It is a super-2 number, since 2×67698523107071² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67698523106995 and 67698523107013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67698523107073) 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, 15214535 + ... + 19154088.

It is an arithmetic number, because the mean of its divisors is an integer number (16924639861368).

Almost surely, 2^{67698523107071} is an apocalyptic number.

67698523107071 is a deficient number, since it is larger than the sum of its proper divisors (36338401).

67698523107071 is a wasteful number, since it uses less digits than its factorization.

67698523107071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36338400.

The product of its (nonzero) digits is 26671680, while the sum is 62.

The spelling of 67698523107071 in words is "sixty-seven trillion, six hundred ninety-eight billion, five hundred twenty-three million, one hundred seven thousand, seventy-one".