290163331720 has 32 divisors (see below), whose sum is σ = 653798896920. Its totient is φ = 115899750400.

The previous prime is 290163331699. The next prime is 290163331721. The reversal of 290163331720 is 27133361092.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 230033425924 + 60129905796 = 479618^2 + 245214^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 290163331720.

It is not an unprimeable number, because it can be changed into a prime (290163331721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5146057 + ... + 5202136.

Almost surely, 2^290163331720 is an apocalyptic number.

290163331720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290163331720 is an abundant number, since it is smaller than the sum of its proper divisors (363635565200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290163331720 is a wasteful number, since it uses less digits than its factorization.

290163331720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348905 (or 10348901 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 37.

The spelling of 290163331720 in words is "two hundred ninety billion, one hundred sixty-three million, three hundred thirty-one thousand, seven hundred twenty".