197771934916 has 24 divisors (see below), whose sum is σ = 357380674560. Its totient is φ = 95665228800.

The previous prime is 197771934883. The next prime is 197771934953. The reversal of 197771934916 is 619439177791.

It is a super-2 number, since 2×197771934916² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131076 + ... + 642436.

It is an arithmetic number, because the mean of its divisors is an integer number (14890861440).

Almost surely, 2^197771934916 is an apocalyptic number.

It is an amenable number.

197771934916 is a deficient number, since it is larger than the sum of its proper divisors (159608739644).

197771934916 is a wasteful number, since it uses less digits than its factorization.

197771934916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514515 (or 514513 counting only the distinct ones).

The product of its digits is 18003384, while the sum is 64.

The spelling of 197771934916 in words is "one hundred ninety-seven billion, seven hundred seventy-one million, nine hundred thirty-four thousand, nine hundred sixteen".