1243914770866 has 8 divisors (see below), whose sum is σ = 1865893376304. Its totient is φ = 621950312100.

The previous prime is 1243914770837. The next prime is 1243914770909. The reversal of 1243914770866 is 6680774193421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1243914770866² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243914770866.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3314040 + ... + 3670243.

It is an arithmetic number, because the mean of its divisors is an integer number (233236672038).

Almost surely, 2^{1243914770866} is an apocalyptic number.

1243914770866 is a deficient number, since it is larger than the sum of its proper divisors (621978605438).

1243914770866 is an equidigital number, since it uses as much as digits as its factorization.

1243914770866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073336.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 1243914770866 in words is "one trillion, two hundred forty-three billion, nine hundred fourteen million, seven hundred seventy thousand, eight hundred sixty-six".