65427312787 has 32 divisors (see below), whose sum is σ = 70253281280. Its totient is φ = 60818895360.

The previous prime is 65427312739. The next prime is 65427312799. The reversal of 65427312787 is 78721372456.

It is a cyclic number.

It is not a de Polignac number, because 65427312787 - 2¹⁹ = 65426788499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65427312287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51154414 + ... + 51155692.

It is an arithmetic number, because the mean of its divisors is an integer number (2195415040).

Almost surely, 2^65427312787 is an apocalyptic number.

65427312787 is a deficient number, since it is larger than the sum of its proper divisors (4825968493).

65427312787 is a wasteful number, since it uses less digits than its factorization.

65427312787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883.

The product of its digits is 3951360, while the sum is 52.

The spelling of 65427312787 in words is "sixty-five billion, four hundred twenty-seven million, three hundred twelve thousand, seven hundred eighty-seven".