135582564473 has 4 divisors (see below), whose sum is σ = 143558009460. Its totient is φ = 127607119488.

The previous prime is 135582564457. The next prime is 135582564479. The reversal of 135582564473 is 374465285531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65985793129 + 69596771344 = 256877^2 + 263812^2 .

It is a cyclic number.

It is not a de Polignac number, because 135582564473 - 2⁴ = 135582564457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135582564479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3987722468 + ... + 3987722501.

It is an arithmetic number, because the mean of its divisors is an integer number (35889502365).

Almost surely, 2^135582564473 is an apocalyptic number.

It is an amenable number.

135582564473 is a deficient number, since it is larger than the sum of its proper divisors (7975444987).

135582564473 is an equidigital number, since it uses as much as digits as its factorization.

135582564473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7975444986.

The product of its digits is 12096000, while the sum is 53.

The spelling of 135582564473 in words is "one hundred thirty-five billion, five hundred eighty-two million, five hundred sixty-four thousand, four hundred seventy-three".