1273565005680 has 80 divisors (see below), whose sum is σ = 4306965300864. Its totient is φ = 308743031040.

The previous prime is 1273565005637. The next prime is 1273565005771. The reversal of 1273565005680 is 865005653721.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241202854 + ... + 241208133.

Almost surely, 2^{1273565005680} is an apocalyptic number.

1273565005680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273565005680 is an abundant number, since it is smaller than the sum of its proper divisors (3033400295184).

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

1273565005680 is a wasteful number, since it uses less digits than its factorization.

1273565005680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482411014 (or 482411008 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 1273565005680 in words is "one trillion, two hundred seventy-three billion, five hundred sixty-five million, five thousand, six hundred eighty".