197532126321 has 8 divisors (see below), whose sum is σ = 263407111584. Its totient is φ = 131672612640.

The previous prime is 197532126317. The next prime is 197532126349. The reversal of 197532126321 is 123621235791.

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

It is not a de Polignac number, because 197532126321 - 2² = 197532126317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197532126361) 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, 3838071 + ... + 3889196.

It is an arithmetic number, because the mean of its divisors is an integer number (32925888948).

Almost surely, 2^197532126321 is an apocalyptic number.

It is an amenable number.

197532126321 is a deficient number, since it is larger than the sum of its proper divisors (65874985263).

197532126321 is an equidigital number, since it uses as much as digits as its factorization.

197532126321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735791.

The product of its digits is 136080, while the sum is 42.

The spelling of 197532126321 in words is "one hundred ninety-seven billion, five hundred thirty-two million, one hundred twenty-six thousand, three hundred twenty-one".