4511155440 has 160 divisors (see below), whose sum is σ = 15668568576. Its totient is φ = 1064033280.

The previous prime is 4511155379. The next prime is 4511155447. The reversal of 4511155440 is 445511154.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4511155398 and 4511155407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4511155447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74589 + ... + 120771.

Almost surely, 2^4511155440 is an apocalyptic number.

4511155440 is a gapful number since it is divisible by the number (40) 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 4511155440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7834284288).

4511155440 is an abundant number, since it is smaller than the sum of its proper divisors (11157413136).

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

4511155440 is a wasteful number, since it uses less digits than its factorization.

4511155440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46247 (or 46241 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 4511155440 is about 67165.1355987614. The cubic root of 4511155440 is about 1652.3267376246.

Adding to 4511155440 its reverse (445511154), we get a palindrome (4956666594).

It can be divided in two parts, 4511 and 155440, that added together give a palindrome (159951).

The spelling of 4511155440 in words is "four billion, five hundred eleven million, one hundred fifty-five thousand, four hundred forty".