136645400221545 has 16 divisors (see below), whose sum is σ = 230139621426240. Its totient is φ = 69041886427584.

The previous prime is 136645400221541. The next prime is 136645400221573. The reversal of 136645400221545 is 545122004546631.

It is not a de Polignac number, because 136645400221545 - 2² = 136645400221541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136645400221494 and 136645400221503.

It is not an unprimeable number, because it can be changed into a prime (136645400221541) 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, 239728772034 + ... + 239728772603.

It is an arithmetic number, because the mean of its divisors is an integer number (14383726339140).

Almost surely, 2^{136645400221545} is an apocalyptic number.

136645400221545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136645400221545 is a deficient number, since it is larger than the sum of its proper divisors (93494221204695).

136645400221545 is a wasteful number, since it uses less digits than its factorization.

136645400221545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479457544664.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 136645400221545 in words is "one hundred thirty-six trillion, six hundred forty-five billion, four hundred million, two hundred twenty-one thousand, five hundred forty-five".