65726041566 has 16 divisors (see below), whose sum is σ = 131461902864. Its totient is φ = 21907043904.

The previous prime is 65726041553. The next prime is 65726041571. The reversal of 65726041566 is 66514062756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320671 + ... + 484026.

It is an arithmetic number, because the mean of its divisors is an integer number (8216368929).

Almost surely, 2^65726041566 is an apocalyptic number.

65726041566 is an abundant number, since it is smaller than the sum of its proper divisors (65735861298).

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

65726041566 is a wasteful number, since it uses less digits than its factorization.

65726041566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818315.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 65726041566 in words is "sixty-five billion, seven hundred twenty-six million, forty-one thousand, five hundred sixty-six".