287483782021 has 2 divisors, whose sum is σ = 287483782022. Its totient is φ = 287483782020.

The previous prime is 287483781931. The next prime is 287483782031. The reversal of 287483782021 is 120287384782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259372229796 + 28111552225 = 509286^2 + 167665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287483782021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287483782021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287483782031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143741891010 + 143741891011.

It is an arithmetic number, because the mean of its divisors is an integer number (143741891011).

Almost surely, 2^287483782021 is an apocalyptic number.

It is an amenable number.

287483782021 is a deficient number, since it is larger than the sum of its proper divisors (1).

287483782021 is an equidigital number, since it uses as much as digits as its factorization.

287483782021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2408448, while the sum is 52.

The spelling of 287483782021 in words is "two hundred eighty-seven billion, four hundred eighty-three million, seven hundred eighty-two thousand, twenty-one".