1243605580980 has 96 divisors (see below), whose sum is σ = 3980581242624. Its totient is φ = 284178177024.

The previous prime is 1243605580961. The next prime is 1243605580981. The reversal of 1243605580980 is 890855063421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243605580981) 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 31 ways as a sum of consecutive naturals, for example, 1223614 + ... + 1996106.

It is an arithmetic number, because the mean of its divisors is an integer number (41464387944).

Almost surely, 2^{1243605580980} is an apocalyptic number.

1243605580980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243605580980 is an abundant number, since it is smaller than the sum of its proper divisors (2736975661644).

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

1243605580980 is a wasteful number, since it uses less digits than its factorization.

1243605580980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776345 (or 776343 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 1243605580980 in words is "one trillion, two hundred forty-three billion, six hundred five million, five hundred eighty thousand, nine hundred eighty".