136103780563281 has 20 divisors (see below), whose sum is σ = 204159156960484. Its totient is φ = 90359356377600.

The previous prime is 136103780563271. The next prime is 136103780563403. The reversal of 136103780563281 is 182365087301631.

136103780563281 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 0 + 3 + 78 + 0 + 563 + 2 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39783610130625 + 96320170432656 = 6307425^2 + 9814284^2 .

It is not a de Polignac number, because 136103780563281 - 2¹³ = 136103780555089 is a prime.

It is a super-2 number, since 2×136103780563281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136103780563271) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3486066760 + ... + 3486105801.

Almost surely, 2^{136103780563281} is an apocalyptic number.

It is an amenable number.

136103780563281 is a deficient number, since it is larger than the sum of its proper divisors (68055376397203).

136103780563281 is an equidigital number, since it uses as much as digits as its factorization.

136103780563281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972172814 (or 6972172805 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 136103780563281 in words is "one hundred thirty-six trillion, one hundred three billion, seven hundred eighty million, five hundred sixty-three thousand, two hundred eighty-one".