134625644591 has 4 divisors (see below), whose sum is σ = 134634317184. Its totient is φ = 134616972000.

The previous prime is 134625644561. The next prime is 134625644609. The reversal of 134625644591 is 195446526431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134625644591 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 (134625644551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4312970 + ... + 4344071.

It is an arithmetic number, because the mean of its divisors is an integer number (33658579296).

Almost surely, 2^134625644591 is an apocalyptic number.

134625644591 is a deficient number, since it is larger than the sum of its proper divisors (8672593).

134625644591 is an equidigital number, since it uses as much as digits as its factorization.

134625644591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672592.

The product of its digits is 3110400, while the sum is 50.

The spelling of 134625644591 in words is "one hundred thirty-four billion, six hundred twenty-five million, six hundred forty-four thousand, five hundred ninety-one".