136221031002545 has 4 divisors (see below), whose sum is σ = 163465237203060. Its totient is φ = 108976824802032.

The previous prime is 136221031002493. The next prime is 136221031002569. The reversal of 136221031002545 is 545200130122631.

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 78277619231296 + 57943411771249 = 8847464^2 + 7612057^2 .

It is a cyclic number.

It is not a de Polignac number, because 136221031002545 - 2⁸ = 136221031002289 is a prime.

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, 13622103100250 + ... + 13622103100259.

It is an arithmetic number, because the mean of its divisors is an integer number (40866309300765).

Almost surely, 2^{136221031002545} is an apocalyptic number.

It is an amenable number.

136221031002545 is a deficient number, since it is larger than the sum of its proper divisors (27244206200515).

136221031002545 is an equidigital number, since it uses as much as digits as its factorization.

136221031002545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27244206200514.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 136221031002545 in words is "one hundred thirty-six trillion, two hundred twenty-one billion, thirty-one million, two thousand, five hundred forty-five".