197377800872641 has 9 divisors (see below), whose sum is σ = 198945992647521. Its totient is φ = 195821874771012.

The previous prime is 197377800872633. The next prime is 197377800872717. The reversal of 197377800872641 is 146278008773791.

The square root of 197377800872641 is 14049121.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 197377800872641 - 2³ = 197377800872633 is a prime.

It is a super-2 number, since 2×197377800872641² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197377800870641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1784183056 + ... + 1784293678.

It is an arithmetic number, because the mean of its divisors is an integer number (22105110294169).

Almost surely, 2^{197377800872641} is an apocalyptic number.

197377800872641 is the 14049121-st square number.

197377800872641 is the 7024561-st centered octagonal number.

It is an amenable number.

197377800872641 is a deficient number, since it is larger than the sum of its proper divisors (1568191774880).

197377800872641 is an frugal number, since it uses more digits than its factorization.

197377800872641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221500 (or 110750 counting only the distinct ones).

The product of its (nonzero) digits is 199148544, while the sum is 70.

The spelling of 197377800872641 in words is "one hundred ninety-seven trillion, three hundred seventy-seven billion, eight hundred million, eight hundred seventy-two thousand, six hundred forty-one".