8155281057120 has 192 divisors, whose sum is σ = 28550145738240. Its totient is φ = 2174234033664.

The previous prime is 8155281057031. The next prime is 8155281057127. The reversal of 8155281057120 is 217501825518.

It is a happy number.

8155281057120 is a `hidden beast` number, since 8 + 1 + 5 + 52 + 8 + 1 + 0 + 571 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8155281057127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18474499 + ... + 18910781.

It is an arithmetic number, because the mean of its divisors is an integer number (148698675720).

Almost surely, 2^{8155281057120} is an apocalyptic number.

8155281057120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8155281057120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14275072869120).

8155281057120 is an abundant number, since it is smaller than the sum of its proper divisors (20394864681120).

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

8155281057120 is a wasteful number, since it uses less digits than its factorization.

8155281057120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440634 (or 440620 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 45.

The spelling of 8155281057120 in words is "eight trillion, one hundred fifty-five billion, two hundred eighty-one million, fifty-seven thousand, one hundred twenty".