1273342565456 has 40 divisors (see below), whose sum is σ = 2681708922144. Its totient is φ = 582204067200.

The previous prime is 1273342565347. The next prime is 1273342565477. The reversal of 1273342565456 is 6545652433721.

It is a junction number, because it is equal to n+sod(n) for n = 1273342565398 and 1273342565407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28584470 + ... + 28628981.

Almost surely, 2^{1273342565456} is an apocalyptic number.

1273342565456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1273342565456 is an abundant number, since it is smaller than the sum of its proper divisors (1408366356688).

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

1273342565456 is a wasteful number, since it uses less digits than its factorization.

1273342565456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57213579 (or 57213573 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 53.

The spelling of 1273342565456 in words is "one trillion, two hundred seventy-three billion, three hundred forty-two million, five hundred sixty-five thousand, four hundred fifty-six".