197715644804 has 12 divisors (see below), whose sum is σ = 347813910528. Its totient is φ = 98340241800.

The previous prime is 197715644779. The next prime is 197715644813. The reversal of 197715644804 is 408446517791.

It is a super-2 number, since 2×197715644804² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197715644804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129394292 + ... + 129395819.

It is an arithmetic number, because the mean of its divisors is an integer number (28984492544).

Almost surely, 2^197715644804 is an apocalyptic number.

It is an amenable number.

197715644804 is a deficient number, since it is larger than the sum of its proper divisors (150098265724).

197715644804 is a wasteful number, since it uses less digits than its factorization.

197715644804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258790306 (or 258790304 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 197715644804 in words is "one hundred ninety-seven billion, seven hundred fifteen million, six hundred forty-four thousand, eight hundred four".