136660271772840 has 128 divisors (see below), whose sum is σ = 430378986700800. Its totient is φ = 34669418261760.

The previous prime is 136660271772793. The next prime is 136660271772841. The reversal of 136660271772840 is 48277172066631.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (136660271772841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311107912 + ... + 311546871.

It is an arithmetic number, because the mean of its divisors is an integer number (3362335833600).

Almost surely, 2^{136660271772840} is an apocalyptic number.

136660271772840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136660271772840 is an abundant number, since it is smaller than the sum of its proper divisors (293718714927960).

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

136660271772840 is a wasteful number, since it uses less digits than its factorization.

136660271772840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622654887 (or 622654883 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 60.

The spelling of 136660271772840 in words is "one hundred thirty-six trillion, six hundred sixty billion, two hundred seventy-one million, seven hundred seventy-two thousand, eight hundred forty".