1005503434420 has 48 divisors (see below), whose sum is σ = 2115424080000. Its totient is φ = 401465151360.

The previous prime is 1005503434387. The next prime is 1005503434447. The reversal of 1005503434420 is 244343055001.

It is a super-2 number, since 2×1005503434420² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72545451 + ... + 72559309.

It is an arithmetic number, because the mean of its divisors is an integer number (44071335000).

Almost surely, 2^{1005503434420} is an apocalyptic number.

1005503434420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005503434420 is an abundant number, since it is smaller than the sum of its proper divisors (1109920645580).

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

1005503434420 is a wasteful number, since it uses less digits than its factorization.

1005503434420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20248 (or 20246 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 1005503434420 its reverse (244343055001), we get a palindrome (1249846489421).

The spelling of 1005503434420 in words is "one trillion, five billion, five hundred three million, four hundred thirty-four thousand, four hundred twenty".