285345154187 has 4 divisors (see below), whose sum is σ = 292304792136. Its totient is φ = 278385516240.

The previous prime is 285345154177. The next prime is 285345154223. The reversal of 285345154187 is 781451543582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781451543582 = 2 ⋅390725771791.

It is not a de Polignac number, because 285345154187 - 2¹⁸ = 285344892043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285345154147) 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 3 ways as a sum of consecutive naturals, for example, 3479818913 + ... + 3479818994.

It is an arithmetic number, because the mean of its divisors is an integer number (73076198034).

Almost surely, 2^285345154187 is an apocalyptic number.

285345154187 is a deficient number, since it is larger than the sum of its proper divisors (6959637949).

285345154187 is an equidigital number, since it uses as much as digits as its factorization.

285345154187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959637948.

The product of its digits is 5376000, while the sum is 53.

The spelling of 285345154187 in words is "two hundred eighty-five billion, three hundred forty-five million, one hundred fifty-four thousand, one hundred eighty-seven".