1243791145494 has 32 divisors (see below), whose sum is σ = 2764018166880. Its totient is φ = 414591372000.

The previous prime is 1243791145463. The next prime is 1243791145547. The reversal of 1243791145494 is 4945411973421.

1243791145494 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 7 + 9 + 1 + 145 + 494 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1243791145494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6104424 + ... + 6304884.

It is an arithmetic number, because the mean of its divisors is an integer number (86375567715).

Almost surely, 2^{1243791145494} is an apocalyptic number.

1243791145494 is an abundant number, since it is smaller than the sum of its proper divisors (1520227021386).

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

1243791145494 is a wasteful number, since it uses less digits than its factorization.

1243791145494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315373 (or 315367 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 1243791145494 in words is "one trillion, two hundred forty-three billion, seven hundred ninety-one million, one hundred forty-five thousand, four hundred ninety-four".