97897079879 has 2 divisors, whose sum is σ = 97897079880. Its totient is φ = 97897079878.

The previous prime is 97897079837. The next prime is 97897079899.

97897079879 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97897079879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97897079809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48948539939 + 48948539940.

It is an arithmetic number, because the mean of its divisors is an integer number (48948539940).

Almost surely, 2^97897079879 is an apocalyptic number.

97897079879 is a deficient number, since it is larger than the sum of its proper divisors (1).

97897079879 is an equidigital number, since it uses as much as digits as its factorization.

97897079879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008189504, while the sum is 80.

The spelling of 97897079879 in words is "ninety-seven billion, eight hundred ninety-seven million, seventy-nine thousand, eight hundred seventy-nine".