290505238616 has 16 divisors (see below), whose sum is σ = 576738341640. Its totient is φ = 136708347520.

The previous prime is 290505238603. The next prime is 290505238631. The reversal of 290505238616 is 616832505092.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068033830 + ... + 1068034101.

Almost surely, 2^290505238616 is an apocalyptic number.

It is an amenable number.

290505238616 is a deficient number, since it is larger than the sum of its proper divisors (286233103024).

290505238616 is a wasteful number, since it uses less digits than its factorization.

290505238616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136067954 (or 2136067950 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 290505238616 in words is "two hundred ninety billion, five hundred five million, two hundred thirty-eight thousand, six hundred sixteen".