197961960378 has 32 divisors (see below), whose sum is σ = 487290980736. Its totient is φ = 52209747648.

The previous prime is 197961960347. The next prime is 197961960401. The reversal of 197961960378 is 873069169791.

It is a super-3 number, since 3×197961960378³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181283301 + ... + 181284392.

It is an arithmetic number, because the mean of its divisors is an integer number (15227843148).

Almost surely, 2^197961960378 is an apocalyptic number.

197961960378 is an abundant number, since it is smaller than the sum of its proper divisors (289329020358).

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

197961960378 is a wasteful number, since it uses less digits than its factorization.

197961960378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362567718.

The product of its (nonzero) digits is 30862944, while the sum is 66.

The spelling of 197961960378 in words is "one hundred ninety-seven billion, nine hundred sixty-one million, nine hundred sixty thousand, three hundred seventy-eight".