289500026345 has 4 divisors (see below), whose sum is σ = 347400031620. Its totient is φ = 231600021072.

The previous prime is 289500026339. The next prime is 289500026381. The reversal of 289500026345 is 543620005982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122434908649 + 167065117696 = 349907^2 + 408736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289500026345 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289500026296 and 289500026305.

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, 28950002630 + ... + 28950002639.

It is an arithmetic number, because the mean of its divisors is an integer number (86850007905).

Almost surely, 2^289500026345 is an apocalyptic number.

It is an amenable number.

289500026345 is a deficient number, since it is larger than the sum of its proper divisors (57900005275).

289500026345 is an equidigital number, since it uses as much as digits as its factorization.

289500026345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57900005274.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 289500026345 in words is "two hundred eighty-nine billion, five hundred million, twenty-six thousand, three hundred forty-five".