2136206261 has 8 divisors (see below), whose sum is σ = 2442933504. Its totient is φ = 1829867760.

The previous prime is 2136206251. The next prime is 2136206263. The reversal of 2136206261 is 1626026312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2136206261 - 2⁶ = 2136206197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136206263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85310 + ... + 107471.

It is an arithmetic number, because the mean of its divisors is an integer number (305366688).

Almost surely, 2^2136206261 is an apocalyptic number.

It is an amenable number.

2136206261 is a deficient number, since it is larger than the sum of its proper divisors (306727243).

2136206261 is a wasteful number, since it uses less digits than its factorization.

2136206261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194371.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2136206261 is about 46219.1114259026. Note that the first 3 decimals coincide. The cubic root of 2136206261 is about 1287.8967913407.

The spelling of 2136206261 in words is "two billion, one hundred thirty-six million, two hundred six thousand, two hundred sixty-one".