65555050631 has 8 divisors (see below), whose sum is σ = 74997542400. Its totient is φ = 56131930008.

The previous prime is 65555050619. The next prime is 65555050663. The reversal of 65555050631 is 13605055556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65555050631 - 2¹⁰ = 65555049607 is a prime.

It is a super-2 number, since 2×65555050631² (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 (65555050031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4835531 + ... + 4849068.

It is an arithmetic number, because the mean of its divisors is an integer number (9374692800).

Almost surely, 2^65555050631 is an apocalyptic number.

65555050631 is a deficient number, since it is larger than the sum of its proper divisors (9442491769).

65555050631 is an equidigital number, since it uses as much as digits as its factorization.

65555050631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9685573.

The product of its (nonzero) digits is 337500, while the sum is 41.

The spelling of 65555050631 in words is "sixty-five billion, five hundred fifty-five million, fifty thousand, six hundred thirty-one".