1243122048564 has 96 divisors (see below), whose sum is σ = 3278530805760. Its totient is φ = 363196387200.

The previous prime is 1243122048551. The next prime is 1243122048587. The reversal of 1243122048564 is 4658402213421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 536077 + ... + 1665419.

It is an arithmetic number, because the mean of its divisors is an integer number (34151362560).

Almost surely, 2^{1243122048564} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243122048564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639265402880).

1243122048564 is an abundant number, since it is smaller than the sum of its proper divisors (2035408757196).

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

1243122048564 is a wasteful number, since it uses less digits than its factorization.

1243122048564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129661 (or 1129659 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 1243122048564 in words is "one trillion, two hundred forty-three billion, one hundred twenty-two million, forty-eight thousand, five hundred sixty-four".