1264944213192 has 256 divisors, whose sum is σ = 3561252480000. Its totient is φ = 371266874880.

The previous prime is 1264944213173. The next prime is 1264944213229. The reversal of 1264944213192 is 2913124494621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7066727359 + ... + 7066727537.

It is an arithmetic number, because the mean of its divisors is an integer number (13911142500).

Almost surely, 2^{1264944213192} is an apocalyptic number.

1264944213192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1264944213192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780626240000).

1264944213192 is an abundant number, since it is smaller than the sum of its proper divisors (2296308266808).

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

1264944213192 is an equidigital number, since it uses as much as digits as its factorization.

1264944213192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 351 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The spelling of 1264944213192 in words is "one trillion, two hundred sixty-four billion, nine hundred forty-four million, two hundred thirteen thousand, one hundred ninety-two".