136881849349646 has 16 divisors (see below), whose sum is σ = 206088860430576. Its totient is φ = 68185979459136.

The previous prime is 136881849349627. The next prime is 136881849349723. The reversal of 136881849349646 is 646943948188631.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 103572671 + ... + 104885946.

It is an arithmetic number, because the mean of its divisors is an integer number (12880553776911).

Almost surely, 2^{136881849349646} is an apocalyptic number.

136881849349646 is a deficient number, since it is larger than the sum of its proper divisors (69207011080930).

136881849349646 is a wasteful number, since it uses less digits than its factorization.

136881849349646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208459843.

The product of its digits is 5159780352, while the sum is 80.

The spelling of 136881849349646 in words is "one hundred thirty-six trillion, eight hundred eighty-one billion, eight hundred forty-nine million, three hundred forty-nine thousand, six hundred forty-six".