65556015616 has 80 divisors (see below), whose sum is σ = 161211181824. Its totient is φ = 25934229504.

The previous prime is 65556015583. The next prime is 65556015619. The reversal of 65556015616 is 61651065556.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65556015619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656920 + ... + 750103.

Almost surely, 2^65556015616 is an apocalyptic number.

It is an amenable number.

65556015616 is an abundant number, since it is smaller than the sum of its proper divisors (95655166208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65556015616 is a wasteful number, since it uses less digits than its factorization.

65556015616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407061 (or 1407045 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

It can be divided in two parts, 655560 and 15616, that added together give a palindrome (671176).

The spelling of 65556015616 in words is "sixty-five billion, five hundred fifty-six million, fifteen thousand, six hundred sixteen".