97517755780 has 12 divisors (see below), whose sum is σ = 204787287180. Its totient is φ = 39007102304.

The previous prime is 97517755771. The next prime is 97517755781. The reversal of 97517755780 is 8755771579.

It can be written as a sum of positive squares in 2 ways, for example, as 47230590276 + 50287165504 = 217326^2 + 224248^2 .

It is not an unprimeable number, because it can be changed into a prime (97517755781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2437943875 + ... + 2437943914.

It is an arithmetic number, because the mean of its divisors is an integer number (17065607265).

Almost surely, 2^97517755780 is an apocalyptic number.

It is an amenable number.

97517755780 is an abundant number, since it is smaller than the sum of its proper divisors (107269531400).

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

97517755780 is a wasteful number, since it uses less digits than its factorization.

97517755780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875887798 (or 4875887796 counting only the distinct ones).

The product of its (nonzero) digits is 21609000, while the sum is 61.

The spelling of 97517755780 in words is "ninety-seven billion, five hundred seventeen million, seven hundred fifty-five thousand, seven hundred eighty".