1012355443240 has 16 divisors (see below), whose sum is σ = 2277799747380. Its totient is φ = 404942177280.

The previous prime is 1012355443171. The next prime is 1012355443241. The reversal of 1012355443240 is 423445532101.

It can be written as a sum of positive squares in 2 ways, for example, as 1011323877316 + 1031565924 = 1005646^2 + 32118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1012355443196 and 1012355443205.

It is not an unprimeable number, because it can be changed into a prime (1012355443241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12654443001 + ... + 12654443080.

Almost surely, 2^{1012355443240} is an apocalyptic number.

1012355443240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012355443240 is an abundant number, since it is smaller than the sum of its proper divisors (1265444304140).

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

1012355443240 is a wasteful number, since it uses less digits than its factorization.

1012355443240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25308886092 (or 25308886088 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 1012355443240 in words is "one trillion, twelve billion, three hundred fifty-five million, four hundred forty-three thousand, two hundred forty".