120287805889 has 4 divisors (see below), whose sum is σ = 122326582320. Its totient is φ = 118249029460.

The previous prime is 120287805839. The next prime is 120287805923. The reversal of 120287805889 is 988508782021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988508782021 = 17 ⋅58147575413.

It is a cyclic number.

It is not a de Polignac number, because 120287805889 - 2³¹ = 118140322241 is a prime.

It is a super-3 number, since 3×120287805889³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120287805839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019388127 + ... + 1019388244.

It is an arithmetic number, because the mean of its divisors is an integer number (30581645580).

Almost surely, 2^120287805889 is an apocalyptic number.

It is an amenable number.

120287805889 is a deficient number, since it is larger than the sum of its proper divisors (2038776431).

120287805889 is an equidigital number, since it uses as much as digits as its factorization.

120287805889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038776430.

The product of its (nonzero) digits is 5160960, while the sum is 58.

The spelling of 120287805889 in words is "one hundred twenty billion, two hundred eighty-seven million, eight hundred five thousand, eight hundred eighty-nine".