1012543454420 has 12 divisors (see below), whose sum is σ = 2126341254324. Its totient is φ = 405017381760.

The previous prime is 1012543454413. The next prime is 1012543454437. The reversal of 1012543454420 is 244543452101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 622782975556 + 389760478864 = 789166^2 + 624308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25313586341 + ... + 25313586380.

It is an arithmetic number, because the mean of its divisors is an integer number (177195104527).

Almost surely, 2^{1012543454420} is an apocalyptic number.

1012543454420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012543454420 is an abundant number, since it is smaller than the sum of its proper divisors (1113797799904).

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

1012543454420 is a wasteful number, since it uses less digits than its factorization.

1012543454420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50627172730 (or 50627172728 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 1012543454420 in words is "one trillion, twelve billion, five hundred forty-three million, four hundred fifty-four thousand, four hundred twenty".