285327631031551 has 2 divisors, whose sum is σ = 285327631031552. Its totient is φ = 285327631031550.

The previous prime is 285327631031447. The next prime is 285327631031591. The reversal of 285327631031551 is 155130136723582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285327631031551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285327631031591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142663815515775 + 142663815515776.

It is an arithmetic number, because the mean of its divisors is an integer number (142663815515776).

Almost surely, 2^{285327631031551} is an apocalyptic number.

285327631031551 is a deficient number, since it is larger than the sum of its proper divisors (1).

285327631031551 is an equidigital number, since it uses as much as digits as its factorization.

285327631031551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 285327631031551 in words is "two hundred eighty-five trillion, three hundred twenty-seven billion, six hundred thirty-one million, thirty-one thousand, five hundred fifty-one".