135626440061487 has 4 divisors (see below), whose sum is σ = 180835253415320. Its totient is φ = 90417626707656.

The previous prime is 135626440061447. The next prime is 135626440061521. The reversal of 135626440061487 is 784160044626531.

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

It is a de Polignac number, because none of the positive numbers 2^k-135626440061487 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 (135626440061447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22604406676912 + ... + 22604406676917.

It is an arithmetic number, because the mean of its divisors is an integer number (45208813353830).

Almost surely, 2^{135626440061487} is an apocalyptic number.

135626440061487 is a deficient number, since it is larger than the sum of its proper divisors (45208813353833).

135626440061487 is an equidigital number, since it uses as much as digits as its factorization.

135626440061487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45208813353832.

The product of its (nonzero) digits is 23224320, while the sum is 57.

The spelling of 135626440061487 in words is "one hundred thirty-five trillion, six hundred twenty-six billion, four hundred forty million, sixty-one thousand, four hundred eighty-seven".