9712782571 has 2 divisors, whose sum is σ = 9712782572. Its totient is φ = 9712782570.

The previous prime is 9712782559. The next prime is 9712782587. The reversal of 9712782571 is 1752872179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9712782571 - 2²¹ = 9710685419 is a prime.

It is not a weakly prime, because it can be changed into another prime (9712782671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4856391285 + 4856391286.

It is an arithmetic number, because the mean of its divisors is an integer number (4856391286).

Almost surely, 2^9712782571 is an apocalyptic number.

9712782571 is a deficient number, since it is larger than the sum of its proper divisors (1).

9712782571 is an equidigital number, since it uses as much as digits as its factorization.

9712782571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 49.

The square root of 9712782571 is about 98553.4503251916. The cubic root of 9712782571 is about 2133.6076291647.

The spelling of 9712782571 in words is "nine billion, seven hundred twelve million, seven hundred eighty-two thousand, five hundred seventy-one".