197871215890342 has 16 divisors (see below), whose sum is σ = 296889025788432. Its totient is φ = 98908209310720.

The previous prime is 197871215890307. The next prime is 197871215890351. The reversal of 197871215890342 is 243098512178791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201333318 + ... + 202313734.

It is an arithmetic number, because the mean of its divisors is an integer number (18555564111777).

Almost surely, 2^{197871215890342} is an apocalyptic number.

197871215890342 is a deficient number, since it is larger than the sum of its proper divisors (99017809898090).

197871215890342 is a wasteful number, since it uses less digits than its factorization.

197871215890342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008263.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The spelling of 197871215890342 in words is "one hundred ninety-seven trillion, eight hundred seventy-one billion, two hundred fifteen million, eight hundred ninety thousand, three hundred forty-two".