1280741252080 has 80 divisors (see below), whose sum is σ = 3146012928000. Its totient is φ = 483542472960.

The previous prime is 1280741252041. The next prime is 1280741252081. The reversal of 1280741252080 is 802521470821.

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

It is a super-2 number, since 2×1280741252080² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280741252081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142680 + ... + 1966519.

It is an arithmetic number, because the mean of its divisors is an integer number (39325161600).

Almost surely, 2^{1280741252080} is an apocalyptic number.

1280741252080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280741252080 is an abundant number, since it is smaller than the sum of its proper divisors (1865271675920).

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

1280741252080 is a wasteful number, since it uses less digits than its factorization.

1280741252080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109502 (or 3109496 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 1280741252080 in words is "one trillion, two hundred eighty billion, seven hundred forty-one million, two hundred fifty-two thousand, eighty".