67134477081 has 12 divisors (see below), whose sum is σ = 104126944272. Its totient is φ = 38362558248.

The previous prime is 67134476987. The next prime is 67134477149. The reversal of 67134477081 is 18077443176.

67134477081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 67134477081 - 2¹¹ = 67134475033 is a prime.

It is a super-2 number, since 2×67134477081² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67134477081.

It is not an unprimeable number, because it can be changed into a prime (67134477581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228348415 + ... + 228348708.

It is an arithmetic number, because the mean of its divisors is an integer number (8677245356).

Almost surely, 2^67134477081 is an apocalyptic number.

It is an amenable number.

67134477081 is a deficient number, since it is larger than the sum of its proper divisors (36992467191).

67134477081 is a wasteful number, since it uses less digits than its factorization.

67134477081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456697140 (or 456697133 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 67134477081 in words is "sixty-seven billion, one hundred thirty-four million, four hundred seventy-seven thousand, eighty-one".