288978248989 has 4 divisors (see below), whose sum is σ = 289740724960. Its totient is φ = 288215773020.

The previous prime is 288978248987. The next prime is 288978249047. The reversal of 288978248989 is 989842879882.

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.

It is a cyclic number.

It is not a de Polignac number, because 288978248989 - 2¹ = 288978248987 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 (288978248987) 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, 381237417 + ... + 381238174.

It is an arithmetic number, because the mean of its divisors is an integer number (72435181240).

Almost surely, 2^288978248989 is an apocalyptic number.

It is an amenable number.

288978248989 is a deficient number, since it is larger than the sum of its proper divisors (762475971).

288978248989 is an equidigital number, since it uses as much as digits as its factorization.

288978248989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762475970.

The product of its digits is 2675441664, while the sum is 82.

The spelling of 288978248989 in words is "two hundred eighty-eight billion, nine hundred seventy-eight million, two hundred forty-eight thousand, nine hundred eighty-nine".