1229513784852 has 48 divisors (see below), whose sum is σ = 2896524453312. Its totient is φ = 405888890880.

The previous prime is 1229513784799. The next prime is 1229513784857. The reversal of 1229513784852 is 2584873159221.

It is a junction number, because it is equal to n+sod(n) for n = 1229513784792 and 1229513784801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229513784857) 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, 4305588 + ... + 4582260.

It is an arithmetic number, because the mean of its divisors is an integer number (60344259444).

Almost surely, 2^{1229513784852} is an apocalyptic number.

1229513784852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1229513784852 is an abundant number, since it is smaller than the sum of its proper divisors (1667010668460).

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

1229513784852 is a wasteful number, since it uses less digits than its factorization.

1229513784852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280248 (or 280246 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 57.

The spelling of 1229513784852 in words is "one trillion, two hundred twenty-nine billion, five hundred thirteen million, seven hundred eighty-four thousand, eight hundred fifty-two".