136780111 has 8 divisors (see below), whose sum is σ = 147770784. Its totient is φ = 125856480.

The previous prime is 136780109. The next prime is 136780129. The reversal of 136780111 is 111087631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136780111 - 2¹ = 136780109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136780111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136780811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12475 + ... + 20716.

It is an arithmetic number, because the mean of its divisors is an integer number (18471348).

Almost surely, 2^136780111 is an apocalyptic number.

136780111 is a deficient number, since it is larger than the sum of its proper divisors (10990673).

136780111 is a wasteful number, since it uses less digits than its factorization.

136780111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33521.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 136780111 is about 11695.3029460549. The cubic root of 136780111 is about 515.2377210251.

The spelling of 136780111 in words is "one hundred thirty-six million, seven hundred eighty thousand, one hundred eleven".