1229703856128 has 720 divisors, whose sum is σ = 4118601142656. Its totient is φ = 363414159360.

The previous prime is 1229703856111. The next prime is 1229703856159. The reversal of 1229703856128 is 8216583079221.

1229703856128 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 70 + 3 + 8 + 561 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1883160250 + ... + 1883160902.

Almost surely, 2^{1229703856128} is an apocalyptic number.

1229703856128 is a gapful number since it is divisible by the number (18) 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 1229703856128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059300571328).

1229703856128 is an abundant number, since it is smaller than the sum of its proper divisors (2888897286528).

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

1229703856128 is an frugal number, since it uses more digits than its factorization.

1229703856128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1229703856128 in words is "one trillion, two hundred twenty-nine billion, seven hundred three million, eight hundred fifty-six thousand, one hundred twenty-eight".