97935824813 has 2 divisors, whose sum is σ = 97935824814. Its totient is φ = 97935824812.

The previous prime is 97935824783. The next prime is 97935824849. The reversal of 97935824813 is 31842853979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97935824809 + 4 = 312947^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 97935824813 - 2¹⁴ = 97935808429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97935824873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48967912406 + 48967912407.

It is an arithmetic number, because the mean of its divisors is an integer number (48967912407).

Almost surely, 2^97935824813 is an apocalyptic number.

It is an amenable number.

97935824813 is a deficient number, since it is larger than the sum of its proper divisors (1).

97935824813 is an equidigital number, since it uses as much as digits as its factorization.

97935824813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The spelling of 97935824813 in words is "ninety-seven billion, nine hundred thirty-five million, eight hundred twenty-four thousand, eight hundred thirteen".