1129947866850 has 96 divisors (see below), whose sum is σ = 3058233278400. Its totient is φ = 273818272000.

The previous prime is 1129947866837. The next prime is 1129947866881. The reversal of 1129947866850 is 586687499211.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4071520 + ... + 4340180.

It is an arithmetic number, because the mean of its divisors is an integer number (31856596650).

Almost surely, 2^{1129947866850} is an apocalyptic number.

1129947866850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129947866850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529116639200).

1129947866850 is an abundant number, since it is smaller than the sum of its proper divisors (1928285411550).

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

1129947866850 is a wasteful number, since it uses less digits than its factorization.

1129947866850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271236 (or 271231 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 66.

The spelling of 1129947866850 in words is "one trillion, one hundred twenty-nine billion, nine hundred forty-seven million, eight hundred sixty-six thousand, eight hundred fifty".