1129780667505 has 32 divisors (see below), whose sum is σ = 2174615424000. Its totient is φ = 489288468672.

The previous prime is 1129780667497. The next prime is 1129780667527. The reversal of 1129780667505 is 5057660879211.

It is not a de Polignac number, because 1129780667505 - 2³ = 1129780667497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 283151055 + ... + 283155044.

It is an arithmetic number, because the mean of its divisors is an integer number (67956732000).

Almost surely, 2^{1129780667505} is an apocalyptic number.

1129780667505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1129780667505 is a deficient number, since it is larger than the sum of its proper divisors (1044834756495).

1129780667505 is a wasteful number, since it uses less digits than its factorization.

1129780667505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566306133.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 1129780667505 in words is "one trillion, one hundred twenty-nine billion, seven hundred eighty million, six hundred sixty-seven thousand, five hundred five".