1264403093844 has 96 divisors (see below), whose sum is σ = 3289119644160. Its totient is φ = 374786755200.

The previous prime is 1264403093819. The next prime is 1264403093861. The reversal of 1264403093844 is 4483903044621.

It is a junction number, because it is equal to n+sod(n) for n = 1264403093793 and 1264403093802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2042667 + ... + 2588685.

It is an arithmetic number, because the mean of its divisors is an integer number (34261662960).

Almost surely, 2^{1264403093844} 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 1264403093844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644559822080).

1264403093844 is an abundant number, since it is smaller than the sum of its proper divisors (2024716550316).

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

1264403093844 is a wasteful number, since it uses less digits than its factorization.

1264403093844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546421 (or 546419 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 1264403093844 in words is "one trillion, two hundred sixty-four billion, four hundred three million, ninety-three thousand, eight hundred forty-four".