285090063081 has 16 divisors (see below), whose sum is σ = 397235841024. Its totient is φ = 181690249104.

The previous prime is 285090063077. The next prime is 285090063101. The reversal of 285090063081 is 180360090582.

It is not a de Polignac number, because 285090063081 - 2² = 285090063077 is a prime.

It is a super-2 number, since 2×285090063081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285090063031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23504581 + ... + 23516706.

It is an arithmetic number, because the mean of its divisors is an integer number (24827240064).

Almost surely, 2^285090063081 is an apocalyptic number.

It is an amenable number.

285090063081 is a deficient number, since it is larger than the sum of its proper divisors (112145777943).

285090063081 is a wasteful number, since it uses less digits than its factorization.

285090063081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47021380.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 285090063081 in words is "two hundred eighty-five billion, ninety million, sixty-three thousand, eighty-one".