97681864906 has 8 divisors (see below), whose sum is σ = 147063472704. Its totient is φ = 48660707340.

The previous prime is 97681864871. The next prime is 97681864913. The reversal of 97681864906 is 60946818679.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90111880 + ... + 90112963.

It is an arithmetic number, because the mean of its divisors is an integer number (18382934088).

Almost surely, 2^97681864906 is an apocalyptic number.

97681864906 is a deficient number, since it is larger than the sum of its proper divisors (49381607798).

97681864906 is a wasteful number, since it uses less digits than its factorization.

97681864906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180225116.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 97681864906 in words is "ninety-seven billion, six hundred eighty-one million, eight hundred sixty-four thousand, nine hundred six".