1275782780080 has 40 divisors (see below), whose sum is σ = 2973666561552. Its totient is φ = 509027675904.

The previous prime is 1275782780059. The next prime is 1275782780081. The reversal of 1275782780080 is 800872875721.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1275782780081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20052982 + ... + 20116501.

Almost surely, 2^{1275782780080} is an apocalyptic number.

1275782780080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275782780080 is an abundant number, since it is smaller than the sum of its proper divisors (1697883781472).

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

1275782780080 is a wasteful number, since it uses less digits than its factorization.

1275782780080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40169893 (or 40169887 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 55.

The spelling of 1275782780080 in words is "one trillion, two hundred seventy-five billion, seven hundred eighty-two million, seven hundred eighty thousand, eighty".