97857075871 has 2 divisors, whose sum is σ = 97857075872. Its totient is φ = 97857075870.

The previous prime is 97857075859. The next prime is 97857075931. The reversal of 97857075871 is 17857075879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97857075871 - 2⁹ = 97857075359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97857076871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48928537935 + 48928537936.

It is an arithmetic number, because the mean of its divisors is an integer number (48928537936).

Almost surely, 2^97857075871 is an apocalyptic number.

97857075871 is a deficient number, since it is larger than the sum of its proper divisors (1).

97857075871 is an equidigital number, since it uses as much as digits as its factorization.

97857075871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34574400, while the sum is 64.

The spelling of 97857075871 in words is "ninety-seven billion, eight hundred fifty-seven million, seventy-five thousand, eight hundred seventy-one".