1189555550023 has 8 divisors (see below), whose sum is σ = 1212560753040. Its totient is φ = 1166770492800.

The previous prime is 1189555550021. The next prime is 1189555550081. The reversal of 1189555550023 is 3200555559811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1189555550023 - 2¹ = 1189555550021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189555550021) 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, 55025538 + ... + 55047151.

It is an arithmetic number, because the mean of its divisors is an integer number (151570094130).

Almost surely, 2^{1189555550023} is an apocalyptic number.

1189555550023 is a deficient number, since it is larger than the sum of its proper divisors (23005203017).

1189555550023 is a wasteful number, since it uses less digits than its factorization.

1189555550023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110072897.

The product of its (nonzero) digits is 1350000, while the sum is 49.

The spelling of 1189555550023 in words is "one trillion, one hundred eighty-nine billion, five hundred fifty-five million, five hundred fifty thousand, twenty-three".