134444667791 has 16 divisors (see below), whose sum is σ = 155260412160. Its totient is φ = 114031653120.

The previous prime is 134444667787. The next prime is 134444667817. The reversal of 134444667791 is 197766444431.

It is a happy number.

It is not a de Polignac number, because 134444667791 - 2² = 134444667787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134444667761) 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, 5568656 + ... + 5592746.

It is an arithmetic number, because the mean of its divisors is an integer number (9703775760).

Almost surely, 2^134444667791 is an apocalyptic number.

134444667791 is a deficient number, since it is larger than the sum of its proper divisors (20815744369).

134444667791 is an equidigital number, since it uses as much as digits as its factorization.

134444667791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32414.

The product of its digits is 12192768, while the sum is 56.

The spelling of 134444667791 in words is "one hundred thirty-four billion, four hundred forty-four million, six hundred sixty-seven thousand, seven hundred ninety-one".