65723140242 has 48 divisors (see below), whose sum is σ = 145826883072. Its totient is φ = 21383066880.

The previous prime is 65723140183. The next prime is 65723140279. The reversal of 65723140242 is 24204132756.

65723140242 is a `hidden beast` number, since 6 + 572 + 3 + 1 + 40 + 2 + 42 = 666.

65723140242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 65723140197 and 65723140206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204642 + ... + 416322.

It is an arithmetic number, because the mean of its divisors is an integer number (3038060064).

Almost surely, 2^65723140242 is an apocalyptic number.

65723140242 is an abundant number, since it is smaller than the sum of its proper divisors (80103742830).

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

65723140242 is a wasteful number, since it uses less digits than its factorization.

65723140242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212103 (or 212100 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 65723140242 its reverse (24204132756), we get a palindrome (89927272998).

The spelling of 65723140242 in words is "sixty-five billion, seven hundred twenty-three million, one hundred forty thousand, two hundred forty-two".