136921689760 has 24 divisors (see below), whose sum is σ = 323477492436. Its totient is φ = 54768675840.

The previous prime is 136921689743. The next prime is 136921689767. The reversal of 136921689760 is 67986129631.

It can be written as a sum of positive squares in 2 ways, for example, as 129176985744 + 7744704016 = 359412^2 + 88004^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 136921689695 and 136921689704.

It is not an unprimeable number, because it can be changed into a prime (136921689767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427880121 + ... + 427880440.

Almost surely, 2^136921689760 is an apocalyptic number.

136921689760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136921689760 is an abundant number, since it is smaller than the sum of its proper divisors (186555802676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136921689760 is an equidigital number, since it uses as much as digits as its factorization.

136921689760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855760576 (or 855760568 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 136921689760 in words is "one hundred thirty-six billion, nine hundred twenty-one million, six hundred eighty-nine thousand, seven hundred sixty".