3855155109120 has 1296 divisors, whose sum is σ = 16938967631040. Its totient is φ = 834737799168.

The previous prime is 3855155109103. The next prime is 3855155109137. The reversal of 3855155109120 is 219015515583.

3855155109120 is a `hidden beast` number, since 3 + 8 + 5 + 5 + 1 + 5 + 510 + 9 + 120 = 666.

It is an interprime number because it is at equal distance from previous prime (3855155109103) and next prime (3855155109137).

It is a tau number, because it is divible by the number of its divisors (1296).

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 143 ways as a sum of consecutive naturals, for example, 289571584 + ... + 289584896.

Almost surely, 2^{3855155109120} is an apocalyptic number.

3855155109120 is a gapful number since it is divisible by the number (30) 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 3855155109120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8469483815520).

3855155109120 is an abundant number, since it is smaller than the sum of its proper divisors (13083812521920).

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

3855155109120 is a wasteful number, since it uses less digits than its factorization.

3855155109120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13382 (or 13349 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 45.

The spelling of 3855155109120 in words is "three trillion, eight hundred fifty-five billion, one hundred fifty-five million, one hundred nine thousand, one hundred twenty".