189455436672 has 64 divisors (see below), whose sum is σ = 510328978560. Its totient is φ = 62262341120.

The previous prime is 189455436629. The next prime is 189455436679. The reversal of 189455436672 is 276634554981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189455436679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3447198 + ... + 3501725.

It is an arithmetic number, because the mean of its divisors is an integer number (7973890290).

Almost surely, 2^189455436672 is an apocalyptic number.

189455436672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189455436672 is an abundant number, since it is smaller than the sum of its proper divisors (320873541888).

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

189455436672 is an equidigital number, since it uses as much as digits as its factorization.

189455436672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949011 (or 6948999 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 60.

The spelling of 189455436672 in words is "one hundred eighty-nine billion, four hundred fifty-five million, four hundred thirty-six thousand, six hundred seventy-two".