97118727808 has 64 divisors (see below), whose sum is σ = 194853431520. Its totient is φ = 48214932480.

The previous prime is 97118727787. The next prime is 97118727851. The reversal of 97118727808 is 80872781179.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33944298 + ... + 33947158.

Almost surely, 2^97118727808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97118727808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97426715760).

97118727808 is an abundant number, since it is smaller than the sum of its proper divisors (97734703712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97118727808 is a wasteful number, since it uses less digits than its factorization.

97118727808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665 (or 4653 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 58.

The spelling of 97118727808 in words is "ninety-seven billion, one hundred eighteen million, seven hundred twenty-seven thousand, eight hundred eight".