97661442180 has 48 divisors (see below), whose sum is σ = 285341261184. Its totient is φ = 24910744320.

The previous prime is 97661442163. The next prime is 97661442181. The reversal of 97661442180 is 8124416679.

It is not an unprimeable number, because it can be changed into a prime (97661442181) 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 15 ways as a sum of consecutive naturals, for example, 35383201 + ... + 35385960.

It is an arithmetic number, because the mean of its divisors is an integer number (5944609608).

Almost surely, 2^97661442180 is an apocalyptic number.

It is an amenable number.

97661442180 is an abundant number, since it is smaller than the sum of its proper divisors (187679819004).

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

97661442180 is a wasteful number, since it uses less digits than its factorization.

97661442180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70769196 (or 70769194 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 97661442180 in words is "ninety-seven billion, six hundred sixty-one million, four hundred forty-two thousand, one hundred eighty".