287420829828249 has 32 divisors (see below), whose sum is σ = 435927397126144. Its totient is φ = 167188064178240.

The previous prime is 287420829828241. The next prime is 287420829828289. The reversal of 287420829828249 is 942828928024782.

It is not a de Polignac number, because 287420829828249 - 2³ = 287420829828241 is a prime.

It is a super-2 number, since 2×287420829828249² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (287420829828241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2764300927 + ... + 2764404900.

It is an arithmetic number, because the mean of its divisors is an integer number (13622731160192).

Almost surely, 2^{287420829828249} is an apocalyptic number.

It is an amenable number.

287420829828249 is a deficient number, since it is larger than the sum of its proper divisors (148506567297895).

287420829828249 is a wasteful number, since it uses less digits than its factorization.

287420829828249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528705917.

The product of its (nonzero) digits is 1189085184, while the sum is 75.

The spelling of 287420829828249 in words is "two hundred eighty-seven trillion, four hundred twenty billion, eight hundred twenty-nine million, eight hundred twenty-eight thousand, two hundred forty-nine".