97666937440 has 24 divisors (see below), whose sum is σ = 230738140080. Its totient is φ = 39066774912.

The previous prime is 97666937429. The next prime is 97666937479. The reversal of 97666937440 is 4473966679.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305209020 + ... + 305209339.

It is an arithmetic number, because the mean of its divisors is an integer number (9614089170).

Almost surely, 2^97666937440 is an apocalyptic number.

It is an amenable number.

97666937440 is an abundant number, since it is smaller than the sum of its proper divisors (133071202640).

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

97666937440 is a wasteful number, since it uses less digits than its factorization.

97666937440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610418374 (or 610418366 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 97666937440 in words is "ninety-seven billion, six hundred sixty-six million, nine hundred thirty-seven thousand, four hundred forty".