134827999991 has 16 divisors (see below), whose sum is σ = 147800700000. Its totient is φ = 122422530048.

The previous prime is 134827999981. The next prime is 134828000009. The reversal of 134827999991 is 199999728431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134827999991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134827999921) 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, 506276 + ... + 725238.

It is an arithmetic number, because the mean of its divisors is an integer number (9237543750).

Almost surely, 2^134827999991 is an apocalyptic number.

134827999991 is a deficient number, since it is larger than the sum of its proper divisors (12972700009).

134827999991 is a wasteful number, since it uses less digits than its factorization.

134827999991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220258.

The product of its digits is 79361856, while the sum is 71.

The spelling of 134827999991 in words is "one hundred thirty-four billion, eight hundred twenty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-one".