136932820481 has 4 divisors (see below), whose sum is σ = 144987692292. Its totient is φ = 128877948672.

The previous prime is 136932820429. The next prime is 136932820489. The reversal of 136932820481 is 184028239631.

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 37342084081 + 99590736400 = 193241^2 + 315580^2 .

It is a cyclic number.

It is not a de Polignac number, because 136932820481 - 2¹⁴ = 136932804097 is a prime.

It is a super-2 number, since 2×136932820481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136932820489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4027435880 + ... + 4027435913.

It is an arithmetic number, because the mean of its divisors is an integer number (36246923073).

Almost surely, 2^136932820481 is an apocalyptic number.

It is an amenable number.

136932820481 is a deficient number, since it is larger than the sum of its proper divisors (8054871811).

136932820481 is an equidigital number, since it uses as much as digits as its factorization.

136932820481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054871810.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 136932820481 in words is "one hundred thirty-six billion, nine hundred thirty-two million, eight hundred twenty thousand, four hundred eighty-one".