97776595853 has 4 divisors (see below), whose sum is σ = 97779072540. Its totient is φ = 97774119168.

The previous prime is 97776595811. The next prime is 97776595877. The reversal of 97776595853 is 35859567779.

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 15153117604 + 82623478249 = 123098^2 + 287443^2 .

It is a cyclic number.

It is not a de Polignac number, because 97776595853 - 2⁸ = 97776595597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97776565853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178150 + ... + 1258407.

It is an arithmetic number, because the mean of its divisors is an integer number (24444768135).

Almost surely, 2^97776595853 is an apocalyptic number.

It is an amenable number.

97776595853 is a deficient number, since it is larger than the sum of its proper divisors (2476687).

97776595853 is a wasteful number, since it uses less digits than its factorization.

97776595853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476686.

The product of its digits is 500094000, while the sum is 71.

The spelling of 97776595853 in words is "ninety-seven billion, seven hundred seventy-six million, five hundred ninety-five thousand, eight hundred fifty-three".