1023130043440 has 160 divisors (see below), whose sum is σ = 2419240158720. Its totient is φ = 402361344000.

The previous prime is 1023130043401. The next prime is 1023130043501. The reversal of 1023130043440 is 443400313201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1032421345 + ... + 1032422335.

It is an arithmetic number, because the mean of its divisors is an integer number (15120250992).

Almost surely, 2^{1023130043440} is an apocalyptic number.

1023130043440 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 1023130043440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209620079360).

1023130043440 is an abundant number, since it is smaller than the sum of its proper divisors (1396110115280).

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

1023130043440 is a wasteful number, since it uses less digits than its factorization.

1023130043440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1023130043440 its reverse (443400313201), we get a palindrome (1466530356641).

The spelling of 1023130043440 in words is "one trillion, twenty-three billion, one hundred thirty million, forty-three thousand, four hundred forty".