979705896497 has 2 divisors, whose sum is σ = 979705896498. Its totient is φ = 979705896496.

The previous prime is 979705896391. The next prime is 979705896509. The reversal of 979705896497 is 794698507979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 977124342016 + 2581554481 = 988496^2 + 50809^2 .

It is an emirp because it is prime and its reverse (794698507979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979705896497 - 2³² = 975410929201 is a prime.

It is not a weakly prime, because it can be changed into another prime (979704896497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489852948248 + 489852948249.

It is an arithmetic number, because the mean of its divisors is an integer number (489852948249).

Almost surely, 2^979705896497 is an apocalyptic number.

It is an amenable number.

979705896497 is a deficient number, since it is larger than the sum of its proper divisors (1).

979705896497 is an equidigital number, since it uses as much as digits as its factorization.

979705896497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160406080, while the sum is 80.

The spelling of 979705896497 in words is "nine hundred seventy-nine billion, seven hundred five million, eight hundred ninety-six thousand, four hundred ninety-seven".