97843759766 has 4 divisors (see below), whose sum is σ = 146765639652. Its totient is φ = 48921879882.

The previous prime is 97843759723. The next prime is 97843759787. The reversal of 97843759766 is 66795734879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66795734879 = 1621 ⋅41206499.

It is a self number, because there is not a number n which added to its sum of digits gives 97843759766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24460939940 + ... + 24460939943.

It is an arithmetic number, because the mean of its divisors is an integer number (36691409913).

Almost surely, 2^97843759766 is an apocalyptic number.

97843759766 is a deficient number, since it is larger than the sum of its proper divisors (48921879886).

97843759766 is a wasteful number, since it uses less digits than its factorization.

97843759766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48921879885.

The product of its digits is 480090240, while the sum is 71.

The spelling of 97843759766 in words is "ninety-seven billion, eight hundred forty-three million, seven hundred fifty-nine thousand, seven hundred sixty-six".