97691878248 has 64 divisors (see below), whose sum is σ = 246928651200. Its totient is φ = 32205358080.

The previous prime is 97691878243. The next prime is 97691878267. The reversal of 97691878248 is 84287819679.

It is a Cunningham number, because it is equal to 312557²-1.

It is not an unprimeable number, because it can be changed into a prime (97691878243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1211163 + ... + 1289301.

It is an arithmetic number, because the mean of its divisors is an integer number (3858260175).

Almost surely, 2^97691878248 is an apocalyptic number.

It is an amenable number.

97691878248 is an abundant number, since it is smaller than the sum of its proper divisors (149236772952).

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

97691878248 is a wasteful number, since it uses less digits than its factorization.

97691878248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78722 (or 78718 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 69.

The spelling of 97691878248 in words is "ninety-seven billion, six hundred ninety-one million, eight hundred seventy-eight thousand, two hundred forty-eight".