1002154330440 has 192 divisors, whose sum is σ = 3479594788800. Its totient is φ = 249396973056.

The previous prime is 1002154330417. The next prime is 1002154330447. The reversal of 1002154330440 is 440334512001.

It is a happy number.

1002154330440 is a `hidden beast` number, since 1 + 0 + 0 + 215 + 4 + 3 + 3 + 0 + 440 = 666.

It is not an unprimeable number, because it can be changed into a prime (1002154330447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 635107 + ... + 1551666.

It is an arithmetic number, because the mean of its divisors is an integer number (18122889525).

Almost surely, 2^{1002154330440} is an apocalyptic number.

1002154330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002154330440 is an abundant number, since it is smaller than the sum of its proper divisors (2477440458360).

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

1002154330440 is a wasteful number, since it uses less digits than its factorization.

1002154330440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186876 (or 2186869 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 1002154330440 its reverse (440334512001), we get a palindrome (1442488842441).

The spelling of 1002154330440 in words is "one trillion, two billion, one hundred fifty-four million, three hundred thirty thousand, four hundred forty".