136855281001 has 4 divisors (see below), whose sum is σ = 137189890900. Its totient is φ = 136520671104.

The previous prime is 136855280987. The next prime is 136855281011. The reversal of 136855281001 is 100182558631.

It is a happy number.

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 112922881600 + 23932399401 = 336040^2 + 154701^2 .

It is a cyclic number.

It is not a de Polignac number, because 136855281001 - 2²¹ = 136853183849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136855281011) 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, 167304336 + ... + 167305153.

It is an arithmetic number, because the mean of its divisors is an integer number (34297472725).

Almost surely, 2^136855281001 is an apocalyptic number.

It is an amenable number.

136855281001 is a deficient number, since it is larger than the sum of its proper divisors (334609899).

136855281001 is an equidigital number, since it uses as much as digits as its factorization.

136855281001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334609898.

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 136855281001 in words is "one hundred thirty-six billion, eight hundred fifty-five million, two hundred eighty-one thousand, one".