8349617658940 has 24 divisors (see below), whose sum is σ = 17536229454240. Its totient is φ = 3339459945408.

The previous prime is 8349617658931. The next prime is 8349617658947. The reversal of 8349617658940 is 498567169438.

It is a happy number.

It is a super-2 number, since 2×8349617658940² (a number of 27 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 8349617658940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8349617658947) 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, 24017992 + ... + 24363151.

It is an arithmetic number, because the mean of its divisors is an integer number (730676227260).

Almost surely, 2^{8349617658940} is an apocalyptic number.

It is an amenable number.

8349617658940 is an abundant number, since it is smaller than the sum of its proper divisors (9186611795300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8349617658940 is a wasteful number, since it uses less digits than its factorization.

8349617658940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48389781 (or 48389779 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 70.

The spelling of 8349617658940 in words is "eight trillion, three hundred forty-nine billion, six hundred seventeen million, six hundred fifty-eight thousand, nine hundred forty".