136775754121 has 4 divisors (see below), whose sum is σ = 136777023252. Its totient is φ = 136774484992.

The previous prime is 136775754107. The next prime is 136775754133. The reversal of 136775754121 is 121457577631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20317366521 + 116458387600 = 142539^2 + 341260^2 .

It is a cyclic number.

It is not a de Polignac number, because 136775754121 - 2⁷ = 136775753993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136775754151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456196 + ... + 694021.

It is an arithmetic number, because the mean of its divisors is an integer number (34194255813).

Almost surely, 2^136775754121 is an apocalyptic number.

It is an amenable number.

136775754121 is a deficient number, since it is larger than the sum of its proper divisors (1269131).

136775754121 is a wasteful number, since it uses less digits than its factorization.

136775754121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269130.

The product of its digits is 1234800, while the sum is 49.

The spelling of 136775754121 in words is "one hundred thirty-six billion, seven hundred seventy-five million, seven hundred fifty-four thousand, one hundred twenty-one".