1155052649520 has 320 divisors, whose sum is σ = 4960226810880. Its totient is φ = 240010905600.

The previous prime is 1155052649467. The next prime is 1155052649521. The reversal of 1155052649520 is 259462505511.

1155052649520 is a `hidden beast` number, since 1 + 1 + 550 + 5 + 2 + 6 + 4 + 95 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1155052649521) 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 63 ways as a sum of consecutive naturals, for example, 3306061 + ... + 3638700.

It is an arithmetic number, because the mean of its divisors is an integer number (15500708784).

Almost surely, 2^{1155052649520} is an apocalyptic number.

1155052649520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155052649520 is an abundant number, since it is smaller than the sum of its proper divisors (3805174161360).

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

1155052649520 is a wasteful number, since it uses less digits than its factorization.

1155052649520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944801 (or 6944789 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 1155052649520 in words is "one trillion, one hundred fifty-five billion, fifty-two million, six hundred forty-nine thousand, five hundred twenty".