196972865397 has 64 divisors (see below), whose sum is σ = 385218201600. Its totient is φ = 96304515840.

The previous prime is 196972865357. The next prime is 196972865443. The reversal of 196972865397 is 793568279691.

196972865397 is a `hidden beast` number, since 1 + 9 + 6 + 9 + 7 + 2 + 86 + 539 + 7 = 666.

It is not a de Polignac number, because 196972865397 - 2⁶ = 196972865333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196972865357) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2751247 + ... + 2821932.

It is an arithmetic number, because the mean of its divisors is an integer number (6019034400).

Almost surely, 2^196972865397 is an apocalyptic number.

196972865397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

196972865397 is a deficient number, since it is larger than the sum of its proper divisors (188245336203).

196972865397 is a wasteful number, since it uses less digits than its factorization.

196972865397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573223 (or 5573217 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 72.

The spelling of 196972865397 in words is "one hundred ninety-six billion, nine hundred seventy-two million, eight hundred sixty-five thousand, three hundred ninety-seven".