136958049971 has 4 divisors (see below), whose sum is σ = 137019276192. Its totient is φ = 136896823752.

The previous prime is 136958049959. The next prime is 136958049989. The reversal of 136958049971 is 179940859631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179940859631 = 13 ⋅13841604587.

It is a cyclic number.

It is not a de Polignac number, because 136958049971 - 2¹⁴ = 136958033587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136958049911) 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, 30609755 + ... + 30614228.

It is an arithmetic number, because the mean of its divisors is an integer number (34254819048).

Almost surely, 2^136958049971 is an apocalyptic number.

136958049971 is a deficient number, since it is larger than the sum of its proper divisors (61226221).

136958049971 is an equidigital number, since it uses as much as digits as its factorization.

136958049971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61226220.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 136958049971 in words is "one hundred thirty-six billion, nine hundred fifty-eight million, forty-nine thousand, nine hundred seventy-one".