67131705157 has 8 divisors (see below), whose sum is σ = 73340579232. Its totient is φ = 60940496400.

The previous prime is 67131705139. The next prime is 67131705167. The reversal of 67131705157 is 75150713176.

67131705157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67131705157 - 2⁷ = 67131705029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67131705167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4408378 + ... + 4423579.

It is an arithmetic number, because the mean of its divisors is an integer number (9167572404).

Almost surely, 2^67131705157 is an apocalyptic number.

It is an amenable number.

67131705157 is a deficient number, since it is larger than the sum of its proper divisors (6208874075).

67131705157 is a wasteful number, since it uses less digits than its factorization.

67131705157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832659.

The product of its (nonzero) digits is 154350, while the sum is 43.

The spelling of 67131705157 in words is "sixty-seven billion, one hundred thirty-one million, seven hundred five thousand, one hundred fifty-seven".