1128869642880 has 1536 divisors, whose sum is σ = 4898675957760. Its totient is φ = 233687089152.

The previous prime is 1128869642821. The next prime is 1128869642881. The reversal of 1128869642880 is 882469688211.

1128869642880 is a `hidden beast` number, since 1 + 128 + 8 + 6 + 9 + 6 + 428 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1128869642881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2158450299 + ... + 2158450821.

It is an arithmetic number, because the mean of its divisors is an integer number (3189242160).

Almost surely, 2^{1128869642880} is an apocalyptic number.

1128869642880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128869642880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449337978880).

1128869642880 is an abundant number, since it is smaller than the sum of its proper divisors (3769806314880).

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

1128869642880 is a wasteful number, since it uses less digits than its factorization.

1128869642880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 63.

The spelling of 1128869642880 in words is "one trillion, one hundred twenty-eight billion, eight hundred sixty-nine million, six hundred forty-two thousand, eight hundred eighty".