197800357705 has 8 divisors (see below), whose sum is σ = 237451144392. Its totient is φ = 158179809408.

The previous prime is 197800357691. The next prime is 197800357709. The reversal of 197800357705 is 507753008791.

It can be written as a sum of positive squares in 4 ways, for example, as 95766110521 + 102034247184 = 309461^2 + 319428^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 197800357705 - 2¹¹ = 197800355657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197800357709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7545202 + ... + 7571371.

It is an arithmetic number, because the mean of its divisors is an integer number (29681393049).

Almost surely, 2^197800357705 is an apocalyptic number.

It is an amenable number.

197800357705 is a deficient number, since it is larger than the sum of its proper divisors (39650786687).

197800357705 is a wasteful number, since it uses less digits than its factorization.

197800357705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15119195.

The product of its (nonzero) digits is 1852200, while the sum is 52.

The spelling of 197800357705 in words is "one hundred ninety-seven billion, eight hundred million, three hundred fifty-seven thousand, seven hundred five".