1108164781620 has 384 divisors, whose sum is σ = 3889848238080. Its totient is φ = 260036282880.

The previous prime is 1108164781601. The next prime is 1108164781643. The reversal of 1108164781620 is 261874618011.

1108164781620 is a `hidden beast` number, since 1 + 1 + 0 + 8 + 16 + 4 + 7 + 8 + 1 + 620 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14542539 + ... + 14618541.

It is an arithmetic number, because the mean of its divisors is an integer number (10129813120).

Almost surely, 2^{1108164781620} is an apocalyptic number.

1108164781620 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 1108164781620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944924119040).

1108164781620 is an abundant number, since it is smaller than the sum of its proper divisors (2781683456460).

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

1108164781620 is a wasteful number, since it uses less digits than its factorization.

1108164781620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76132 (or 76124 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 1108164781620 in words is "one trillion, one hundred eight billion, one hundred sixty-four million, seven hundred eighty-one thousand, six hundred twenty".