8213840397297 has 8 divisors (see below), whose sum is σ = 12168652440480. Its totient is φ = 5475893598180.

The previous prime is 8213840397241. The next prime is 8213840397331. The reversal of 8213840397297 is 7927930483128.

8213840397297 is a `hidden beast` number, since 8 + 2 + 138 + 403 + 9 + 7 + 2 + 97 = 666.

It is not a de Polignac number, because 8213840397297 - 2⁶ = 8213840397233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8213840397097) 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, 152108155479 + ... + 152108155532.

It is an arithmetic number, because the mean of its divisors is an integer number (1521081555060).

Almost surely, 2^{8213840397297} is an apocalyptic number.

It is an amenable number.

8213840397297 is a deficient number, since it is larger than the sum of its proper divisors (3954812043183).

8213840397297 is a wasteful number, since it uses less digits than its factorization.

8213840397297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304216311020 (or 304216311014 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 8213840397297 in words is "eight trillion, two hundred thirteen billion, eight hundred forty million, three hundred ninety-seven thousand, two hundred ninety-seven".