288949686881 has 4 divisors (see below), whose sum is σ = 289103467200. Its totient is φ = 288795906564.

The previous prime is 288949686877. The next prime is 288949686887. The reversal of 288949686881 is 188686949882.

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 288949686881 - 2² = 288949686877 is a prime.

It is a super-2 number, since 2×288949686881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288949686887) 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, 76887341 + ... + 76891098.

It is an arithmetic number, because the mean of its divisors is an integer number (72275866800).

Almost surely, 2^288949686881 is an apocalyptic number.

It is an amenable number.

288949686881 is a deficient number, since it is larger than the sum of its proper divisors (153780319).

288949686881 is a wasteful number, since it uses less digits than its factorization.

288949686881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153780318.

The product of its digits is 764411904, while the sum is 77.

The spelling of 288949686881 in words is "two hundred eighty-eight billion, nine hundred forty-nine million, six hundred eighty-six thousand, eight hundred eighty-one".