1264973323488 has 144 divisors (see below), whose sum is σ = 3868286333184. Its totient is φ = 360896981760.

The previous prime is 1264973323477. The next prime is 1264973323513. The reversal of 1264973323488 is 8843233794621.

It is a happy number.

It is a super-2 number, since 2×1264973323488² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3055881 + ... + 3445047.

It is an arithmetic number, because the mean of its divisors is an integer number (26863099536).

Almost surely, 2^{1264973323488} 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 1264973323488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1934143166592).

1264973323488 is an abundant number, since it is smaller than the sum of its proper divisors (2603313009696).

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

1264973323488 is a wasteful number, since it uses less digits than its factorization.

1264973323488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389885 (or 389870 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 1264973323488 in words is "one trillion, two hundred sixty-four billion, nine hundred seventy-three million, three hundred twenty-three thousand, four hundred eighty-eight".