8117912293440 has 224 divisors, whose sum is σ = 27642824795520. Its totient is φ = 2012145647616.

The previous prime is 8117912293399. The next prime is 8117912293481. The reversal of 8117912293440 is 443922197118.

It is an interprime number because it is at equal distance from previous prime (8117912293399) and next prime (8117912293481).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3231969 + ... + 5165408.

Almost surely, 2^{8117912293440} is an apocalyptic number.

8117912293440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8117912293440 is an abundant number, since it is smaller than the sum of its proper divisors (19524912502080).

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

8117912293440 is a wasteful number, since it uses less digits than its factorization.

8117912293440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8397469 (or 8397459 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 8117912293440 in words is "eight trillion, one hundred seventeen billion, nine hundred twelve million, two hundred ninety-three thousand, four hundred forty".