189236078783120 has 80 divisors (see below), whose sum is σ = 452311142577840. Its totient is φ = 73575931410432.

The previous prime is 189236078783057. The next prime is 189236078783149. The reversal of 189236078783120 is 21387870632981.

It can be written as a sum of positive squares in 8 ways, for example, as 2320369772176 + 186915709010944 = 1523276^2 + 13671712^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×189236078783120² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28556855 + ... + 34553814.

It is an arithmetic number, because the mean of its divisors is an integer number (5653889282223).

Almost surely, 2^{189236078783120} is an apocalyptic number.

189236078783120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189236078783120 is an abundant number, since it is smaller than the sum of its proper divisors (263075063794720).

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

189236078783120 is a wasteful number, since it uses less digits than its factorization.

189236078783120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63111732 (or 63111726 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 189236078783120 in words is "one hundred eighty-nine trillion, two hundred thirty-six billion, seventy-eight million, seven hundred eighty-three thousand, one hundred twenty".