67172516157 has 16 divisors (see below), whose sum is σ = 91342440000. Its totient is φ = 43896486144.

The previous prime is 67172516149. The next prime is 67172516171. The reversal of 67172516157 is 75161527176.

It is not a de Polignac number, because 67172516157 - 2³ = 67172516149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67172516107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481932 + ... + 605477.

It is an arithmetic number, because the mean of its divisors is an integer number (5708902500).

Almost surely, 2^67172516157 is an apocalyptic number.

It is an amenable number.

67172516157 is a deficient number, since it is larger than the sum of its proper divisors (24169923843).

67172516157 is a wasteful number, since it uses less digits than its factorization.

67172516157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087820.

The product of its digits is 617400, while the sum is 48.

The spelling of 67172516157 in words is "sixty-seven billion, one hundred seventy-two million, five hundred sixteen thousand, one hundred fifty-seven".