8161021503360 has 1024 divisors, whose sum is σ = 32831698636800. Its totient is φ = 1898422272000.

The previous prime is 8161021503289. The next prime is 8161021503373. The reversal of 8161021503360 is 633051201618.

8161021503360 is a `hidden beast` number, since 8 + 1 + 610 + 2 + 1 + 5 + 0 + 3 + 36 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 475381497 + ... + 475398663.

It is an arithmetic number, because the mean of its divisors is an integer number (32062205700).

Almost surely, 2^{8161021503360} is an apocalyptic number.

8161021503360 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 8161021503360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16415849318400).

8161021503360 is an abundant number, since it is smaller than the sum of its proper divisors (24670677133440).

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

8161021503360 is a wasteful number, since it uses less digits than its factorization.

8161021503360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17308 (or 17290 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 8161021503360 its reverse (633051201618), we get a palindrome (8794072704978).

The spelling of 8161021503360 in words is "eight trillion, one hundred sixty-one billion, twenty-one million, five hundred three thousand, three hundred sixty".