1223245543040 has 32 divisors (see below), whose sum is σ = 2924321377860. Its totient is φ = 489298216960.

The previous prime is 1223245543033. The next prime is 1223245543073. The reversal of 1223245543040 is 403455423221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1173166264384 + 50079278656 = 1083128^2 + 223784^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 955659941 + ... + 955661220.

Almost surely, 2^{1223245543040} is an apocalyptic number.

1223245543040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223245543040 is an abundant number, since it is smaller than the sum of its proper divisors (1701075834820).

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

1223245543040 is an equidigital number, since it uses as much as digits as its factorization.

1223245543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911321180 (or 1911321168 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 1223245543040 in words is "one trillion, two hundred twenty-three billion, two hundred forty-five million, five hundred forty-three thousand, forty".