97273136738 has 6 divisors (see below), whose sum is σ = 145910366721. Its totient is φ = 48636347832.

The previous prime is 97273136677. The next prime is 97273136743. The reversal of 97273136738 is 83763137279.

It can be written as a sum of positive squares in 2 ways, for example, as 58514158609 + 38758978129 = 241897^2 + 196873^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=220537.

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 330806 + ... + 551342.

Almost surely, 2^97273136738 is an apocalyptic number.

97273136738 is a deficient number, since it is larger than the sum of its proper divisors (48637229983).

97273136738 is an frugal number, since it uses more digits than its factorization.

97273136738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441076 (or 220539 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 56.

The spelling of 97273136738 in words is "ninety-seven billion, two hundred seventy-three million, one hundred thirty-six thousand, seven hundred thirty-eight".