197043406864 has 80 divisors (see below), whose sum is σ = 393429104640. Its totient is φ = 95553511040.

The previous prime is 197043406849. The next prime is 197043406883. The reversal of 197043406864 is 468604340791.

It is a super-2 number, since 2×197043406864² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126390117 + ... + 126391675.

It is an arithmetic number, because the mean of its divisors is an integer number (4917863808).

Almost surely, 2^197043406864 is an apocalyptic number.

It is an amenable number.

197043406864 is a deficient number, since it is larger than the sum of its proper divisors (196385697776).

197043406864 is a wasteful number, since it uses less digits than its factorization.

197043406864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 197043406864 in words is "one hundred ninety-seven billion, forty-three million, four hundred six thousand, eight hundred sixty-four".