65556651423 has 24 divisors (see below), whose sum is σ = 90825872400. Its totient is φ = 42010192896.

The previous prime is 65556651409. The next prime is 65556651431. The reversal of 65556651423 is 32415665556.

It is not a de Polignac number, because 65556651423 - 2¹³ = 65556643231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65556652423) 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 in 23 ways as a sum of consecutive naturals, for example, 4555183 + ... + 4569551.

It is an arithmetic number, because the mean of its divisors is an integer number (3784411350).

Almost surely, 2^65556651423 is an apocalyptic number.

65556651423 is a deficient number, since it is larger than the sum of its proper divisors (25269220977).

65556651423 is a wasteful number, since it uses less digits than its factorization.

65556651423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14859 (or 14630 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 48.

The spelling of 65556651423 in words is "sixty-five billion, five hundred fifty-six million, six hundred fifty-one thousand, four hundred twenty-three".