65628326887 has 4 divisors (see below), whose sum is σ = 65909993760. Its totient is φ = 65346660016.

The previous prime is 65628326867. The next prime is 65628326899. The reversal of 65628326887 is 78862382656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65628326887 - 2²⁷ = 65494109159 is a prime.

It is a super-2 number, since 2×65628326887² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65628326867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140833087 + ... + 140833552.

It is an arithmetic number, because the mean of its divisors is an integer number (16477498440).

Almost surely, 2^65628326887 is an apocalyptic number.

65628326887 is a deficient number, since it is larger than the sum of its proper divisors (281666873).

65628326887 is a wasteful number, since it uses less digits than its factorization.

65628326887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281666872.

The product of its digits is 46448640, while the sum is 61.

The spelling of 65628326887 in words is "sixty-five billion, six hundred twenty-eight million, three hundred twenty-six thousand, eight hundred eighty-seven".