9957537871 has 2 divisors, whose sum is σ = 9957537872. Its totient is φ = 9957537870.

The previous prime is 9957537859. The next prime is 9957537881. The reversal of 9957537871 is 1787357599.

9957537871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9957537871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9957537881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978768935 + 4978768936.

It is an arithmetic number, because the mean of its divisors is an integer number (4978768936).

Almost surely, 2^9957537871 is an apocalyptic number.

9957537871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9957537871 is an equidigital number, since it uses as much as digits as its factorization.

9957537871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16669800, while the sum is 61.

The square root of 9957537871 is about 99787.4634961727. The cubic root of 9957537871 is about 2151.3809675685.

The spelling of 9957537871 in words is "nine billion, nine hundred fifty-seven million, five hundred thirty-seven thousand, eight hundred seventy-one".