287987801355 has 32 divisors (see below), whose sum is σ = 518299053120. Its totient is φ = 153593488224.

The previous prime is 287987801303. The next prime is 287987801399. The reversal of 287987801355 is 553108789782.

It is not a de Polignac number, because 287987801355 - 2¹² = 287987797259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287987801292 and 287987801301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13157232 + ... + 13179101.

It is an arithmetic number, because the mean of its divisors is an integer number (16196845410).

Almost surely, 2^287987801355 is an apocalyptic number.

287987801355 is a deficient number, since it is larger than the sum of its proper divisors (230311251765).

287987801355 is an frugal number, since it uses more digits than its factorization.

287987801355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26336359 (or 26336341 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 63.

The spelling of 287987801355 in words is "two hundred eighty-seven billion, nine hundred eighty-seven million, eight hundred one thousand, three hundred fifty-five".