4155551225540 has 384 divisors, whose sum is σ = 10766695758336. Its totient is φ = 1327011840000.

The previous prime is 4155551225531. The next prime is 4155551225561. The reversal of 4155551225540 is 455221555514.

It is a happy number.

4155551225540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 4155551225491 and 4155551225500.

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, 793495802 + ... + 793501038.

It is an arithmetic number, because the mean of its divisors is an integer number (28038270204).

Almost surely, 2^{4155551225540} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4155551225540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5383347879168).

4155551225540 is an abundant number, since it is smaller than the sum of its proper divisors (6611144532796).

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

4155551225540 is a wasteful number, since it uses less digits than its factorization.

4155551225540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479 (or 5477 counting only the distinct ones).

The product of its (nonzero) digits is 1000000, while the sum is 44.

The spelling of 4155551225540 in words is "four trillion, one hundred fifty-five billion, five hundred fifty-one million, two hundred twenty-five thousand, five hundred forty".