1155126782280 has 64 divisors (see below), whose sum is σ = 3486131187840. Its totient is φ = 306189289472.

The previous prime is 1155126782143. The next prime is 1155126782321. The reversal of 1155126782280 is 822876215511.

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, 28800489 + ... + 28840568.

It is an arithmetic number, because the mean of its divisors is an integer number (54470799810).

Almost surely, 2^{1155126782280} is an apocalyptic number.

1155126782280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155126782280 is an abundant number, since it is smaller than the sum of its proper divisors (2331004405560).

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

1155126782280 is a wasteful number, since it uses less digits than its factorization.

1155126782280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57641238 (or 57641234 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 1155126782280 in words is "one trillion, one hundred fifty-five billion, one hundred twenty-six million, seven hundred eighty-two thousand, two hundred eighty".