65838005990 has 16 divisors (see below), whose sum is σ = 124745695920. Its totient is φ = 24949139040.

The previous prime is 65838005983. The next prime is 65838006007. The reversal of 65838005990 is 9950083856.

65838005990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173257721 + ... + 173258100.

It is an arithmetic number, because the mean of its divisors is an integer number (7796605995).

Almost surely, 2^65838005990 is an apocalyptic number.

65838005990 is a deficient number, since it is larger than the sum of its proper divisors (58907689930).

65838005990 is a wasteful number, since it uses less digits than its factorization.

65838005990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346515847.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 65838005990 in words is "sixty-five billion, eight hundred thirty-eight million, five thousand, nine hundred ninety".