136775457570817 has 4 divisors (see below), whose sum is σ = 147296646614740. Its totient is φ = 126254268526896.

The previous prime is 136775457570803. The next prime is 136775457570823. The reversal of 136775457570817 is 718075754577631.

It is a Cunningham number, because it is equal to 11695104²+1.

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 20233047549456 + 116542410021361 = 4498116^2 + 10795481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136775457570817 is a prime.

It is a super-2 number, since 2×136775457570817² (a number of 29 digits) contains 22 as substring.

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 136775457570817.

It is not an unprimeable number, because it can be changed into a prime (136775457570847) 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, 5260594521942 + ... + 5260594521967.

It is an arithmetic number, because the mean of its divisors is an integer number (36824161653685).

Almost surely, 2^{136775457570817} is an apocalyptic number.

It is an amenable number.

136775457570817 is a deficient number, since it is larger than the sum of its proper divisors (10521189043923).

136775457570817 is a wasteful number, since it uses less digits than its factorization.

136775457570817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10521189043922.

The product of its (nonzero) digits is 1210104000, while the sum is 73.

The spelling of 136775457570817 in words is "one hundred thirty-six trillion, seven hundred seventy-five billion, four hundred fifty-seven million, five hundred seventy thousand, eight hundred seventeen".