8147121504080 has 80 divisors (see below), whose sum is σ = 20402758306560. Its totient is φ = 3007634194944.

The previous prime is 8147121503999. The next prime is 8147121504101. The reversal of 8147121504080 is 804051217418.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×8147121504080² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5193209 + ... + 6577511.

It is an arithmetic number, because the mean of its divisors is an integer number (255034478832).

Almost surely, 2^{8147121504080} is an apocalyptic number.

8147121504080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8147121504080 is an abundant number, since it is smaller than the sum of its proper divisors (12255636802480).

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

8147121504080 is a wasteful number, since it uses less digits than its factorization.

8147121504080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389988 (or 1389982 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The spelling of 8147121504080 in words is "eight trillion, one hundred forty-seven billion, one hundred twenty-one million, five hundred four thousand, eighty".