285052654981 has 4 divisors (see below), whose sum is σ = 285732972000. Its totient is φ = 284372337964.

The previous prime is 285052654979. The next prime is 285052655009. The reversal of 285052654981 is 189456250582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 285052654981 - 2¹ = 285052654979 is a prime.

It is a super-2 number, since 2×285052654981² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285052654921) 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, 340157881 + ... + 340158718.

It is an arithmetic number, because the mean of its divisors is an integer number (71433243000).

Almost surely, 2^285052654981 is an apocalyptic number.

It is an amenable number.

285052654981 is a deficient number, since it is larger than the sum of its proper divisors (680317019).

285052654981 is an equidigital number, since it uses as much as digits as its factorization.

285052654981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680317018.

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 285052654981 in words is "two hundred eighty-five billion, fifty-two million, six hundred fifty-four thousand, nine hundred eighty-one".