135896681045 has 4 divisors (see below), whose sum is σ = 163076017260. Its totient is φ = 108717344832.

The previous prime is 135896681003. The next prime is 135896681051. The reversal of 135896681045 is 540186698531.

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 103750342609 + 32146338436 = 322103^2 + 179294^2 .

It is a cyclic number.

It is not a de Polignac number, because 135896681045 - 2²⁰ = 135895632469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13589668100 + ... + 13589668109.

It is an arithmetic number, because the mean of its divisors is an integer number (40769004315).

Almost surely, 2^135896681045 is an apocalyptic number.

It is an amenable number.

135896681045 is a deficient number, since it is larger than the sum of its proper divisors (27179336215).

135896681045 is an equidigital number, since it uses as much as digits as its factorization.

135896681045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27179336214.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 135896681045 in words is "one hundred thirty-five billion, eight hundred ninety-six million, six hundred eighty-one thousand, forty-five".