1243130760864 has 768 divisors, whose sum is σ = 3919878144000. Its totient is φ = 387527721984.

The previous prime is 1243130760863. The next prime is 1243130760871. The reversal of 1243130760864 is 4680670313421.

1243130760864 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 1 + 30 + 7 + 608 + 6 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (1243130760863) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12069230637 + ... + 12069230739.

It is an arithmetic number, because the mean of its divisors is an integer number (5104008000).

Almost surely, 2^{1243130760864} 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 1243130760864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1959939072000).

1243130760864 is an abundant number, since it is smaller than the sum of its proper divisors (2676747383136).

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

1243130760864 is an equidigital number, since it uses as much as digits as its factorization.

1243130760864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 1243130760864 in words is "one trillion, two hundred forty-three billion, one hundred thirty million, seven hundred sixty thousand, eight hundred sixty-four".