1189445456064 has 28 divisors (see below), whose sum is σ = 3147074436344. Its totient is φ = 396481818624.

The previous prime is 1189445456053. The next prime is 1189445456123. The reversal of 1189445456064 is 4606545449811.

It is a junction number, because it is equal to n+sod(n) for n = 1189445455995 and 1189445456013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3097514017 + ... + 3097514400.

Almost surely, 2^{1189445456064} is an apocalyptic number.

It is an amenable number.

1189445456064 is an abundant number, since it is smaller than the sum of its proper divisors (1957628980280).

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

1189445456064 is an equidigital number, since it uses as much as digits as its factorization.

1189445456064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195028432 (or 6195028422 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 57.

The spelling of 1189445456064 in words is "one trillion, one hundred eighty-nine billion, four hundred forty-five million, four hundred fifty-six thousand, sixty-four".