65628486631 has 2 divisors, whose sum is σ = 65628486632. Its totient is φ = 65628486630.

The previous prime is 65628486611. The next prime is 65628486643. The reversal of 65628486631 is 13668482656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65628486631 - 2³¹ = 63481002983 is a prime.

It is a super-2 number, since 2×65628486631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65628486601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32814243315 + 32814243316.

It is an arithmetic number, because the mean of its divisors is an integer number (32814243316).

Almost surely, 2^65628486631 is an apocalyptic number.

65628486631 is a deficient number, since it is larger than the sum of its proper divisors (1).

65628486631 is an equidigital number, since it uses as much as digits as its factorization.

65628486631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9953280, while the sum is 55.

The spelling of 65628486631 in words is "sixty-five billion, six hundred twenty-eight million, four hundred eighty-six thousand, six hundred thirty-one".