10155144440 has 128 divisors (see below), whose sum is σ = 26579404800. Its totient is φ = 3419919360.

The previous prime is 10155144421. The next prime is 10155144443. The reversal of 10155144440 is 4444155101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10155144443) 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, 9773441 + ... + 9774479.

It is an arithmetic number, because the mean of its divisors is an integer number (207651600).

Almost surely, 2^10155144440 is an apocalyptic number.

10155144440 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 10155144440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13289702400).

10155144440 is an abundant number, since it is smaller than the sum of its proper divisors (16424260360).

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

10155144440 is a wasteful number, since it uses less digits than its factorization.

10155144440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1641 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 10155144440 its reverse (4444155101), we get a palindrome (14599299541).

The spelling of 10155144440 in words is "ten billion, one hundred fifty-five million, one hundred forty-four thousand, four hundred forty".