1005421313500 has 48 divisors (see below), whose sum is σ = 2201727528000. Its totient is φ = 401090251200.

The previous prime is 1005421313497. The next prime is 1005421313521. The reversal of 1005421313500 is 53131245001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 2509000 + ... + 2881999.

It is an arithmetic number, because the mean of its divisors is an integer number (45869323500).

Almost surely, 2^{1005421313500} is an apocalyptic number.

1005421313500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005421313500 is an abundant number, since it is smaller than the sum of its proper divisors (1196306214500).

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

1005421313500 is a wasteful number, since it uses less digits than its factorization.

1005421313500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391391 (or 5391379 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 1005421313500 its reverse (53131245001), we get a palindrome (1058552558501).

The spelling of 1005421313500 in words is "one trillion, five billion, four hundred twenty-one million, three hundred thirteen thousand, five hundred".