136661025740 has 12 divisors (see below), whose sum is σ = 286988154096. Its totient is φ = 54664410288.

The previous prime is 136661025737. The next prime is 136661025749. The reversal of 136661025740 is 47520166631.

It is not an unprimeable number, because it can be changed into a prime (136661025749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3416525624 + ... + 3416525663.

It is an arithmetic number, because the mean of its divisors is an integer number (23915679508).

Almost surely, 2^136661025740 is an apocalyptic number.

136661025740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136661025740 is an abundant number, since it is smaller than the sum of its proper divisors (150327128356).

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

136661025740 is a wasteful number, since it uses less digits than its factorization.

136661025740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833051296 (or 6833051294 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 136661025740 in words is "one hundred thirty-six billion, six hundred sixty-one million, twenty-five thousand, seven hundred forty".