97934319577 has 4 divisors (see below), whose sum is σ = 97937659876. Its totient is φ = 97930979280.

The previous prime is 97934319547. The next prime is 97934319601. The reversal of 97934319577 is 77591343979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77591343979 = 73 ⋅1062895123.

It can be written as a sum of positive squares in 2 ways, for example, as 64158863616 + 33775455961 = 253296^2 + 183781^2 .

It is a cyclic number.

It is not a de Polignac number, because 97934319577 - 2³¹ = 95786835929 is a prime.

It is a super-2 number, since 2×97934319577² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97934319547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625778 + ... + 1684939.

It is an arithmetic number, because the mean of its divisors is an integer number (24484414969).

Almost surely, 2^97934319577 is an apocalyptic number.

It is an amenable number.

97934319577 is a deficient number, since it is larger than the sum of its proper divisors (3340299).

97934319577 is a wasteful number, since it uses less digits than its factorization.

97934319577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340298.

The product of its digits is 45008460, while the sum is 64.

The spelling of 97934319577 in words is "ninety-seven billion, nine hundred thirty-four million, three hundred nineteen thousand, five hundred seventy-seven".