97681681746 has 36 divisors (see below), whose sum is σ = 232633101246. Its totient is φ = 29600508960.

The previous prime is 97681681733. The next prime is 97681681753. The reversal of 97681681746 is 64718618679.

It can be written as a sum of positive squares in only one way, i.e., 94086360225 + 3595321521 = 306735^2 + 59961^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22422451 + ... + 22426806.

Almost surely, 2^97681681746 is an apocalyptic number.

97681681746 is an abundant number, since it is smaller than the sum of its proper divisors (134951419500).

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

97681681746 is a wasteful number, since it uses less digits than its factorization.

97681681746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44849287 (or 44849273 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 97681681746 in words is "ninety-seven billion, six hundred eighty-one million, six hundred eighty-one thousand, seven hundred forty-six".