2155333041440 has 48 divisors (see below), whose sum is σ = 5094609275448. Its totient is φ = 861687085056.

The previous prime is 2155333041419. The next prime is 2155333041443. The reversal of 2155333041440 is 441403335512.

It can be written as a sum of positive squares in 4 ways, for example, as 1523377999504 + 631955041936 = 1234252^2 + 794956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2155333041440.

It is not an unprimeable number, because it can be changed into a prime (2155333041443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175157 + ... + 3793716.

Almost surely, 2^{2155333041440} is an apocalyptic number.

2155333041440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155333041440 is an abundant number, since it is smaller than the sum of its proper divisors (2939276234008).

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

2155333041440 is a wasteful number, since it uses less digits than its factorization.

2155333041440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970821 (or 6970813 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 2155333041440 its reverse (441403335512), we get a palindrome (2596736376952).

The spelling of 2155333041440 in words is "two trillion, one hundred fifty-five billion, three hundred thirty-three million, forty-one thousand, four hundred forty".