290800269081 has 27 divisors (see below), whose sum is σ = 488642610261. Its totient is φ = 166165111224.

The previous prime is 290800269079. The next prime is 290800269091. The reversal of 290800269081 is 180962008092.

The square root of 290800269081 is 539259.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 290800269081 - 2¹ = 290800269079 is a prime.

It is a super-2 number, since 2×290800269081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (290800269091) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11311600 + ... + 11337278.

Almost surely, 2^290800269081 is an apocalyptic number.

290800269081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

290800269081 is the 539259-th square number.

290800269081 is the 269630-th centered octagonal number.

It is an amenable number.

290800269081 is a deficient number, since it is larger than the sum of its proper divisors (197842341180).

290800269081 is an frugal number, since it uses more digits than its factorization.

290800269081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51378 (or 25689 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 290800269081 in words is "two hundred ninety billion, eight hundred million, two hundred sixty-nine thousand, eighty-one".