1820115505152 has 1092 divisors, whose sum is σ = 6561730680064. Its totient is φ = 493762314240.

The previous prime is 1820115505127. The next prime is 1820115505163. The reversal of 1820115505152 is 2515055110281.

It is a happy number.

1820115505152 is a `hidden beast` number, since 1 + 8 + 2 + 0 + 1 + 1 + 550 + 51 + 52 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 34341801958 + ... + 34341802010.

Almost surely, 2^{1820115505152} is an apocalyptic number.

1820115505152 is a gapful number since it is divisible by the number (12) 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 1820115505152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3280865340032).

1820115505152 is an abundant number, since it is smaller than the sum of its proper divisors (4741615174912).

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

1820115505152 is an frugal number, since it uses more digits than its factorization.

1820115505152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 36.

The spelling of 1820115505152 in words is "one trillion, eight hundred twenty billion, one hundred fifteen million, five hundred five thousand, one hundred fifty-two".