197039964718 has 16 divisors (see below), whose sum is σ = 313209030960. Its totient is φ = 92802673600.

The previous prime is 197039964713. The next prime is 197039964773. The reversal of 197039964718 is 817469930791.

It is a self number, because there is not a number n which added to its sum of digits gives 197039964718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197039964713) 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, 41427388 + ... + 41432143.

It is an arithmetic number, because the mean of its divisors is an integer number (19575564435).

Almost surely, 2^197039964718 is an apocalyptic number.

197039964718 is a deficient number, since it is larger than the sum of its proper divisors (116169066242).

197039964718 is a wasteful number, since it uses less digits than its factorization.

197039964718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82859603.

The product of its (nonzero) digits is 20575296, while the sum is 64.

The spelling of 197039964718 in words is "one hundred ninety-seven billion, thirty-nine million, nine hundred sixty-four thousand, seven hundred eighteen".