97909798828 has 12 divisors (see below), whose sum is σ = 171378847080. Its totient is φ = 48944413952.

The previous prime is 97909798807. The next prime is 97909798829. The reversal of 97909798828 is 82889790979.

It is not an unprimeable number, because it can be changed into a prime (97909798829) 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, 2600338 + ... + 2637721.

It is an arithmetic number, because the mean of its divisors is an integer number (14281570590).

Almost surely, 2^97909798828 is an apocalyptic number.

It is an amenable number.

97909798828 is a deficient number, since it is larger than the sum of its proper divisors (73469048252).

97909798828 is a wasteful number, since it uses less digits than its factorization.

97909798828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242736 (or 5242734 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 76.

The spelling of 97909798828 in words is "ninety-seven billion, nine hundred nine million, seven hundred ninety-eight thousand, eight hundred twenty-eight".