43890187751089 has 15 divisors (see below), whose sum is σ = 44947736636073. Its totient is φ = 42857521019964.

The previous prime is 43890187751077. The next prime is 43890187751117. The reversal of 43890187751089 is 98015778109834.

The square root of 43890187751089 is 6624967.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 43890187751089 - 2⁷ = 43890187750961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43890182751089) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12249562192 + ... + 12249565774.

Almost surely, 2^{43890187751089} is an apocalyptic number.

43890187751089 is the 6624967-th square number.

43890187751089 is the 3312484-th centered octagonal number.

It is an amenable number.

43890187751089 is a deficient number, since it is larger than the sum of its proper divisors (1057548884984).

43890187751089 is an frugal number, since it uses more digits than its factorization.

43890187751089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338 (or 3626 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 70.

The spelling of 43890187751089 in words is "forty-three trillion, eight hundred ninety billion, one hundred eighty-seven million, seven hundred fifty-one thousand, eighty-nine".