1081613483820 has 192 divisors, whose sum is σ = 3456929871360. Its totient is φ = 280556607744.

The previous prime is 1081613483803. The next prime is 1081613483837. The reversal of 1081613483820 is 283843161801.

1081613483820 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 613 + 4 + 8 + 3 + 8 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (1081613483803) and next prime (1081613483837).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117218047 + ... + 117227273.

It is an arithmetic number, because the mean of its divisors is an integer number (18004843080).

Almost surely, 2^{1081613483820} is an apocalyptic number.

1081613483820 is a gapful number since it is divisible by the number (10) 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 1081613483820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728464935680).

1081613483820 is an abundant number, since it is smaller than the sum of its proper divisors (2375316387540).

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

1081613483820 is a wasteful number, since it uses less digits than its factorization.

1081613483820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15149 (or 15141 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 1081613483820 in words is "one trillion, eighty-one billion, six hundred thirteen million, four hundred eighty-three thousand, eight hundred twenty".