65542243206 has 64 divisors (see below), whose sum is σ = 145258292736. Its totient is φ = 19548748800.

The previous prime is 65542243199. The next prime is 65542243301. The reversal of 65542243206 is 60234224556.

65542243206 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 31 ways as a sum of consecutive naturals, for example, 2861110 + ... + 2883926.

It is an arithmetic number, because the mean of its divisors is an integer number (2269660824).

Almost surely, 2^65542243206 is an apocalyptic number.

65542243206 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 65542243206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72629146368).

65542243206 is an abundant number, since it is smaller than the sum of its proper divisors (79716049530).

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

65542243206 is a wasteful number, since it uses less digits than its factorization.

65542243206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23517.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 65542243206 in words is "sixty-five billion, five hundred forty-two million, two hundred forty-three thousand, two hundred six".