134668143678 has 16 divisors (see below), whose sum is σ = 273129757056. Its totient is φ = 44257136280.

The previous prime is 134668143667. The next prime is 134668143679. The reversal of 134668143678 is 876341866431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134668143679) 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, 158060776 + ... + 158061627.

It is an arithmetic number, because the mean of its divisors is an integer number (17070609816).

Almost surely, 2^134668143678 is an apocalyptic number.

134668143678 is an abundant number, since it is smaller than the sum of its proper divisors (138461613378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134668143678 is a wasteful number, since it uses less digits than its factorization.

134668143678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316122479.

The product of its digits is 13934592, while the sum is 57.

The spelling of 134668143678 in words is "one hundred thirty-four billion, six hundred sixty-eight million, one hundred forty-three thousand, six hundred seventy-eight".