97761945788 has 72 divisors (see below), whose sum is σ = 188706672000. Its totient is φ = 44283011136.

The previous prime is 97761945779. The next prime is 97761945817. The reversal of 97761945788 is 88754916779.

Its product of digits (213373440) is a multiple of the sum of its prime divisors (4116).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 29632163 + ... + 29635461.

It is an arithmetic number, because the mean of its divisors is an integer number (2620926000).

Almost surely, 2^97761945788 is an apocalyptic number.

It is an amenable number.

97761945788 is a deficient number, since it is larger than the sum of its proper divisors (90944726212).

97761945788 is a wasteful number, since it uses less digits than its factorization.

97761945788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131 (or 4116 counting only the distinct ones).

The product of its digits is 213373440, while the sum is 71.

The spelling of 97761945788 in words is "ninety-seven billion, seven hundred sixty-one million, nine hundred forty-five thousand, seven hundred eighty-eight".