67929745161 has 8 divisors (see below), whose sum is σ = 90614041344. Its totient is φ = 45265972880.

The previous prime is 67929745159. The next prime is 67929745181. The reversal of 67929745161 is 16154792976.

It is a happy number.

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 67929745161 - 2¹ = 67929745159 is a prime.

It is a super-2 number, since 2×67929745161² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67929745111) 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, 5123250 + ... + 5136491.

It is an arithmetic number, because the mean of its divisors is an integer number (11326755168).

Almost surely, 2^67929745161 is an apocalyptic number.

It is an amenable number.

67929745161 is a deficient number, since it is larger than the sum of its proper divisors (22684296183).

67929745161 is a wasteful number, since it uses less digits than its factorization.

67929745161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261951.

The product of its digits is 5715360, while the sum is 57.

The spelling of 67929745161 in words is "sixty-seven billion, nine hundred twenty-nine million, seven hundred forty-five thousand, one hundred sixty-one".