9766420976531 has 2 divisors, whose sum is σ = 9766420976532. Its totient is φ = 9766420976530.

The previous prime is 9766420976527. The next prime is 9766420976539. The reversal of 9766420976531 is 1356790246679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9766420976531 - 2² = 9766420976527 is a prime.

It is a super-2 number, since 2×9766420976531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9766420976539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4883210488265 + 4883210488266.

It is an arithmetic number, because the mean of its divisors is an integer number (4883210488266).

Almost surely, 2^{9766420976531} is an apocalyptic number.

9766420976531 is a deficient number, since it is larger than the sum of its proper divisors (1).

9766420976531 is an equidigital number, since it uses as much as digits as its factorization.

9766420976531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102876480, while the sum is 65.

The spelling of 9766420976531 in words is "nine trillion, seven hundred sixty-six billion, four hundred twenty million, nine hundred seventy-six thousand, five hundred thirty-one".