1265444304140 has 48 divisors (see below), whose sum is σ = 2708874588000. Its totient is φ = 496445317632.

The previous prime is 1265444304079. The next prime is 1265444304151. The reversal of 1265444304140 is 414034445621.

It is a super-2 number, since 2×1265444304140² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1265444304094 and 1265444304103.

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 15 ways as a sum of consecutive naturals, for example, 1755065 + ... + 2368784.

It is an arithmetic number, because the mean of its divisors is an integer number (56434887250).

Almost surely, 2^{1265444304140} is an apocalyptic number.

1265444304140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265444304140 is an abundant number, since it is smaller than the sum of its proper divisors (1443430283860).

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

1265444304140 is a wasteful number, since it uses less digits than its factorization.

1265444304140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124154 (or 4124152 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 1265444304140 its reverse (414034445621), we get a palindrome (1679478749761).

The spelling of 1265444304140 in words is "one trillion, two hundred sixty-five billion, four hundred forty-four million, three hundred four thousand, one hundred forty".