1029781233204 has 48 divisors (see below), whose sum is σ = 2462531270976. Its totient is φ = 334738144000.

The previous prime is 1029781233191. The next prime is 1029781233209. The reversal of 1029781233204 is 4023321879201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029781233209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632779 + ... + 1568429.

It is an arithmetic number, because the mean of its divisors is an integer number (51302734812).

Almost surely, 2^{1029781233204} is an apocalyptic number.

It is an amenable number.

1029781233204 is an abundant number, since it is smaller than the sum of its proper divisors (1432750037772).

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

1029781233204 is a wasteful number, since it uses less digits than its factorization.

1029781233204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937936 (or 937934 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 1029781233204 in words is "one trillion, twenty-nine billion, seven hundred eighty-one million, two hundred thirty-three thousand, two hundred four".