65505555550556 has 48 divisors (see below), whose sum is σ = 130116132851040. Its totient is φ = 28582343166720.

The previous prime is 65505555550381. The next prime is 65505555550597.

65505555550556 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148151051 + ... + 148592546.

It is an arithmetic number, because the mean of its divisors is an integer number (2710752767730).

Almost surely, 2^{65505555550556} is an apocalyptic number.

It is an amenable number.

65505555550556 is a deficient number, since it is larger than the sum of its proper divisors (64610577300484).

65505555550556 is a wasteful number, since it uses less digits than its factorization.

65505555550556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296743814 (or 296743812 counting only the distinct ones).

The product of its (nonzero) digits is 351562500, while the sum is 62.

The spelling of 65505555550556 in words is "sixty-five trillion, five hundred five billion, five hundred fifty-five million, five hundred fifty thousand, five hundred fifty-six".