8787726320551 has 2 divisors, whose sum is σ = 8787726320552. Its totient is φ = 8787726320550.

The previous prime is 8787726320497. The next prime is 8787726320567. The reversal of 8787726320551 is 1550236277878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8787726320551 - 2²⁵ = 8787692766119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8787726320551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8787726327551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4393863160275 + 4393863160276.

It is an arithmetic number, because the mean of its divisors is an integer number (4393863160276).

Almost surely, 2^{8787726320551} is an apocalyptic number.

8787726320551 is a deficient number, since it is larger than the sum of its proper divisors (1).

8787726320551 is an equidigital number, since it uses as much as digits as its factorization.

8787726320551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39513600, while the sum is 61.

The spelling of 8787726320551 in words is "eight trillion, seven hundred eighty-seven billion, seven hundred twenty-six million, three hundred twenty thousand, five hundred fifty-one".