136194720680 has 16 divisors (see below), whose sum is σ = 306438121620. Its totient is φ = 54477888256.

The previous prime is 136194720671. The next prime is 136194720751. The reversal of 136194720680 is 86027491631.

It can be written as a sum of positive squares in 2 ways, for example, as 133150550404 + 3044170276 = 364898^2 + 55174^2 .

It is a super-2 number, since 2×136194720680² (a number of 23 digits) contains 22 as substring.

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, 1702433969 + ... + 1702434048.

Almost surely, 2^136194720680 is an apocalyptic number.

136194720680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136194720680 is an abundant number, since it is smaller than the sum of its proper divisors (170243400940).

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

136194720680 is a wasteful number, since it uses less digits than its factorization.

136194720680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404868028 (or 3404868024 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 136194720680 in words is "one hundred thirty-six billion, one hundred ninety-four million, seven hundred twenty thousand, six hundred eighty".