134581346779 has 8 divisors (see below), whose sum is σ = 146842341120. Its totient is φ = 122324740200.

The previous prime is 134581346773. The next prime is 134581346791. The reversal of 134581346779 is 977643185431.

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 134581346779 - 2⁹ = 134581346267 is a prime.

It is a super-2 number, since 2×134581346779² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134581346773) 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, 1032639 + ... + 1155640.

It is an arithmetic number, because the mean of its divisors is an integer number (18355292640).

Almost surely, 2^134581346779 is an apocalyptic number.

134581346779 is a deficient number, since it is larger than the sum of its proper divisors (12260994341).

134581346779 is a wasteful number, since it uses less digits than its factorization.

134581346779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193881.

The product of its digits is 15240960, while the sum is 58.

The spelling of 134581346779 in words is "one hundred thirty-four billion, five hundred eighty-one million, three hundred forty-six thousand, seven hundred seventy-nine".