136871157091 has 4 divisors (see below), whose sum is σ = 136953265032. Its totient is φ = 136789049152.

The previous prime is 136871157067. The next prime is 136871157103. The reversal of 136871157091 is 190751178631.

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

It is a cyclic number.

It is not a de Polignac number, because 136871157091 - 2¹³ = 136871148899 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136871157191) 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, 41051470 + ... + 41054803.

It is an arithmetic number, because the mean of its divisors is an integer number (34238316258).

Almost surely, 2^136871157091 is an apocalyptic number.

136871157091 is a deficient number, since it is larger than the sum of its proper divisors (82107941).

136871157091 is an equidigital number, since it uses as much as digits as its factorization.

136871157091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82107940.

The product of its (nonzero) digits is 317520, while the sum is 49.

The spelling of 136871157091 in words is "one hundred thirty-six billion, eight hundred seventy-one million, one hundred fifty-seven thousand, ninety-one".