86736886261 has 4 divisors (see below), whose sum is σ = 86887210732. Its totient is φ = 86586561792.

The previous prime is 86736886213. The next prime is 86736886297. The reversal of 86736886261 is 16268863768.

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 59875643025 + 26861243236 = 244695^2 + 163894^2 .

It is a cyclic number.

It is not a de Polignac number, because 86736886261 - 2⁷ = 86736886133 is a prime.

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 86736886261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86736881261) 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, 75161370 + ... + 75162523.

It is an arithmetic number, because the mean of its divisors is an integer number (21721802683).

Almost surely, 2^86736886261 is an apocalyptic number.

It is an amenable number.

86736886261 is a deficient number, since it is larger than the sum of its proper divisors (150324471).

86736886261 is a wasteful number, since it uses less digits than its factorization.

86736886261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150324470.

The product of its digits is 27869184, while the sum is 61.

The spelling of 86736886261 in words is "eighty-six billion, seven hundred thirty-six million, eight hundred eighty-six thousand, two hundred sixty-one".