97135986820 has 12 divisors (see below), whose sum is σ = 203985572364. Its totient is φ = 38854394720.

The previous prime is 97135986793. The next prime is 97135986853. The reversal of 97135986820 is 2868953179.

It can be written as a sum of positive squares in 2 ways, for example, as 56454710404 + 40681276416 = 237602^2 + 201696^2 .

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, 2428399651 + ... + 2428399690.

It is an arithmetic number, because the mean of its divisors is an integer number (16998797697).

Almost surely, 2^97135986820 is an apocalyptic number.

It is an amenable number.

97135986820 is an abundant number, since it is smaller than the sum of its proper divisors (106849585544).

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

97135986820 is a wasteful number, since it uses less digits than its factorization.

97135986820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856799350 (or 4856799348 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 97135986820 in words is "ninety-seven billion, one hundred thirty-five million, nine hundred eighty-six thousand, eight hundred twenty".