65942726391 has 12 divisors (see below), whose sum is σ = 95324060832. Its totient is φ = 43927914816.

The previous prime is 65942726329. The next prime is 65942726407. The reversal of 65942726391 is 19362724956.

65942726391 is a `hidden beast` number, since 6 + 594 + 27 + 26 + 3 + 9 + 1 = 666.

It is not a de Polignac number, because 65942726391 - 2¹⁹ = 65942202103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65942226391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2812911 + ... + 2836256.

It is an arithmetic number, because the mean of its divisors is an integer number (7943671736).

Almost surely, 2^65942726391 is an apocalyptic number.

65942726391 is a deficient number, since it is larger than the sum of its proper divisors (29381334441).

65942726391 is a wasteful number, since it uses less digits than its factorization.

65942726391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650470 (or 5650467 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 65942726391 in words is "sixty-five billion, nine hundred forty-two million, seven hundred twenty-six thousand, three hundred ninety-one".