290385311811 has 16 divisors (see below), whose sum is σ = 443107353600. Its totient is φ = 165703670208.

The previous prime is 290385311773. The next prime is 290385311851. The reversal of 290385311811 is 118113583092.

It is not a de Polignac number, because 290385311811 - 2⁹ = 290385311299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290385311851) 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, 9600946 + ... + 9631143.

It is an arithmetic number, because the mean of its divisors is an integer number (27694209600).

Almost surely, 2^290385311811 is an apocalyptic number.

290385311811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

290385311811 is a deficient number, since it is larger than the sum of its proper divisors (152722041789).

290385311811 is a wasteful number, since it uses less digits than its factorization.

290385311811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19232818.

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 290385311811 in words is "two hundred ninety billion, three hundred eighty-five million, three hundred eleven thousand, eight hundred eleven".