97013773865 has 4 divisors (see below), whose sum is σ = 116416528644. Its totient is φ = 77611019088.

The previous prime is 97013773861. The next prime is 97013773889. The reversal of 97013773865 is 56837731079.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56174214121 + 40839559744 = 237011^2 + 202088^2 .

It is a cyclic number.

It is not a de Polignac number, because 97013773865 - 2² = 97013773861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97013773865.

It is not an unprimeable number, because it can be changed into a prime (97013773861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9701377382 + ... + 9701377391.

It is an arithmetic number, because the mean of its divisors is an integer number (29104132161).

Almost surely, 2^97013773865 is an apocalyptic number.

It is an amenable number.

97013773865 is a deficient number, since it is larger than the sum of its proper divisors (19402754779).

97013773865 is a wasteful number, since it uses less digits than its factorization.

97013773865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402754778.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 97013773865 in words is "ninety-seven billion, thirteen million, seven hundred seventy-three thousand, eight hundred sixty-five".