97797372979 has 2 divisors, whose sum is σ = 97797372980. Its totient is φ = 97797372978.

The previous prime is 97797372949. The next prime is 97797373001. The reversal of 97797372979 is 97927379779.

It is a strong prime.

It is an emirp because it is prime and its reverse (97927379779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97797372979 - 2⁹ = 97797372467 is a prime.

It is not a weakly prime, because it can be changed into another prime (97797372919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48898686489 + 48898686490.

It is an arithmetic number, because the mean of its divisors is an integer number (48898686490).

Almost surely, 2^97797372979 is an apocalyptic number.

97797372979 is a deficient number, since it is larger than the sum of its proper divisors (1).

97797372979 is an equidigital number, since it uses as much as digits as its factorization.

97797372979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 661624362, while the sum is 76.

The spelling of 97797372979 in words is "ninety-seven billion, seven hundred ninety-seven million, three hundred seventy-two thousand, nine hundred seventy-nine".