1264812533472 has 96 divisors (see below), whose sum is σ = 3390026919552. Its totient is φ = 412762847744.

The previous prime is 1264812533461. The next prime is 1264812533473. The reversal of 1264812533472 is 2743352184621.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264812533473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2109943 + ... + 2642249.

It is an arithmetic number, because the mean of its divisors is an integer number (35312780412).

Almost surely, 2^{1264812533472} is an apocalyptic number.

1264812533472 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 1264812533472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1695013459776).

1264812533472 is an abundant number, since it is smaller than the sum of its proper divisors (2125214386080).

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

1264812533472 is a wasteful number, since it uses less digits than its factorization.

1264812533472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532840 (or 532832 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 48.

The spelling of 1264812533472 in words is "one trillion, two hundred sixty-four billion, eight hundred twelve million, five hundred thirty-three thousand, four hundred seventy-two".