97388306993 has 2 divisors, whose sum is σ = 97388306994. Its totient is φ = 97388306992.

The previous prime is 97388306987. The next prime is 97388307073. The reversal of 97388306993 is 39960388379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83692754209 + 13695552784 = 289297^2 + 117028^2 .

It is a cyclic number.

It is not a de Polignac number, because 97388306993 - 2²⁴ = 97371529777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (97388306933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48694153496 + 48694153497.

It is an arithmetic number, because the mean of its divisors is an integer number (48694153497).

Almost surely, 2^97388306993 is an apocalyptic number.

It is an amenable number.

97388306993 is a deficient number, since it is larger than the sum of its proper divisors (1).

97388306993 is an equidigital number, since it uses as much as digits as its factorization.

97388306993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52907904, while the sum is 65.

The spelling of 97388306993 in words is "ninety-seven billion, three hundred eighty-eight million, three hundred six thousand, nine hundred ninety-three".