8764331086421 has 2 divisors, whose sum is σ = 8764331086422. Its totient is φ = 8764331086420.

The previous prime is 8764331086417. The next prime is 8764331086517. The reversal of 8764331086421 is 1246801334678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8084553922225 + 679777164196 = 2843335^2 + 824486^2 .

It is a cyclic number.

It is not a de Polignac number, because 8764331086421 - 2² = 8764331086417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8764331086921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4382165543210 + 4382165543211.

It is an arithmetic number, because the mean of its divisors is an integer number (4382165543211).

Almost surely, 2^{8764331086421} is an apocalyptic number.

It is an amenable number.

8764331086421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8764331086421 is an equidigital number, since it uses as much as digits as its factorization.

8764331086421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 8764331086421 in words is "eight trillion, seven hundred sixty-four billion, three hundred thirty-one million, eighty-six thousand, four hundred twenty-one".