97434982168981 has 4 divisors (see below), whose sum is σ = 97555420961100. Its totient is φ = 97314543376864.

The previous prime is 97434982168913. The next prime is 97434982169089. The reversal of 97434982168981 is 18986128943479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93441415580100 + 3993566588881 = 9666510^2 + 1998391^2 .

It is a cyclic number.

It is not a de Polignac number, because 97434982168981 - 2³³ = 97426392234389 is a prime.

It is a super-2 number, since 2×97434982168981² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97434982168481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60219394846 + ... + 60219396463.

It is an arithmetic number, because the mean of its divisors is an integer number (24388855240275).

Almost surely, 2^{97434982168981} is an apocalyptic number.

It is an amenable number.

97434982168981 is a deficient number, since it is larger than the sum of its proper divisors (120438792119).

97434982168981 is a wasteful number, since it uses less digits than its factorization.

97434982168981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120438792118.

The product of its digits is 1504935936, while the sum is 79.

The spelling of 97434982168981 in words is "ninety-seven trillion, four hundred thirty-four billion, nine hundred eighty-two million, one hundred sixty-eight thousand, nine hundred eighty-one".