287455042681 has 2 divisors, whose sum is σ = 287455042682. Its totient is φ = 287455042680.

The previous prime is 287455042673. The next prime is 287455042709. The reversal of 287455042681 is 186240554782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286456166656 + 998876025 = 535216^2 + 31605^2 .

It is a cyclic number.

It is not a de Polignac number, because 287455042681 - 2³ = 287455042673 is a prime.

It is a super-2 number, since 2×287455042681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (287455042781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143727521340 + 143727521341.

It is an arithmetic number, because the mean of its divisors is an integer number (143727521341).

Almost surely, 2^287455042681 is an apocalyptic number.

It is an amenable number.

287455042681 is a deficient number, since it is larger than the sum of its proper divisors (1).

287455042681 is an equidigital number, since it uses as much as digits as its factorization.

287455042681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4300800, while the sum is 52.

The spelling of 287455042681 in words is "two hundred eighty-seven billion, four hundred fifty-five million, forty-two thousand, six hundred eighty-one".