65727999999 has 24 divisors (see below), whose sum is σ = 100411001600. Its totient is φ = 41315657040.

The previous prime is 65727999937. The next prime is 65728000001. The reversal of 65727999999 is 99999972756.

It is a happy number.

It is not a de Polignac number, because 65727999999 - 2⁷ = 65727999871 is a prime.

It is a Duffinian number.

65727999999 is a modest number, since divided by 999999 gives 65727 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65727999919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 874759 + ... + 946920.

Almost surely, 2^65727999999 is an apocalyptic number.

65727999999 is a deficient number, since it is larger than the sum of its proper divisors (34683001601).

65727999999 is a wasteful number, since it uses less digits than its factorization.

65727999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821915 (or 1821912 counting only the distinct ones).

The product of its digits is 1562436540, while the sum is 81.

The spelling of 65727999999 in words is "sixty-five billion, seven hundred twenty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".