136206476857 has 4 divisors (see below), whose sum is σ = 148588883856. Its totient is φ = 123824069860.

The previous prime is 136206476801. The next prime is 136206476863. The reversal of 136206476857 is 758674602631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758674602631 = 11 ⋅68970418421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136206476857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136206476798 and 136206476807.

It is not an unprimeable number, because it can be changed into a prime (136206476867) 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, 6191203483 + ... + 6191203504.

It is an arithmetic number, because the mean of its divisors is an integer number (37147220964).

Almost surely, 2^136206476857 is an apocalyptic number.

It is an amenable number.

136206476857 is a deficient number, since it is larger than the sum of its proper divisors (12382406999).

136206476857 is a wasteful number, since it uses less digits than its factorization.

136206476857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12382406998.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 136206476857 in words is "one hundred thirty-six billion, two hundred six million, four hundred seventy-six thousand, eight hundred fifty-seven".