87726680202305 has 4 divisors (see below), whose sum is σ = 105272016242772. Its totient is φ = 70181344161840.

The previous prime is 87726680202277. The next prime is 87726680202323. The reversal of 87726680202305 is 50320208662778.

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 21484791658561 + 66241888543744 = 4635169^2 + 8138912^2 .

It is not a de Polignac number, because 87726680202305 - 2¹⁶ = 87726680136769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8772668020226 + ... + 8772668020235.

It is an arithmetic number, because the mean of its divisors is an integer number (26318004060693).

Almost surely, 2^{87726680202305} is an apocalyptic number.

It is an amenable number.

87726680202305 is a deficient number, since it is larger than the sum of its proper divisors (17545336040467).

87726680202305 is a wasteful number, since it uses less digits than its factorization.

87726680202305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17545336040466.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 87726680202305 in words is "eighty-seven trillion, seven hundred twenty-six billion, six hundred eighty million, two hundred two thousand, three hundred five".