655335505533556 has 6 divisors (see below), whose sum is σ = 1146837134683730. Its totient is φ = 327667752766776.

The previous prime is 655335505533523. The next prime is 655335505533563.

655335505533556 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 646769838988900 + 8565666544656 = 25431670^2 + 2926716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81916938191691 + ... + 81916938191698.

Almost surely, 2^{655335505533556} is an apocalyptic number.

It is an amenable number.

655335505533556 is a deficient number, since it is larger than the sum of its proper divisors (491501629150174).

655335505533556 is a wasteful number, since it uses less digits than its factorization.

655335505533556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163833876383393 (or 163833876383391 counting only the distinct ones).

The product of its (nonzero) digits is 1139062500, while the sum is 64.

The spelling of 655335505533556 in words is "six hundred fifty-five trillion, three hundred thirty-five billion, five hundred five million, five hundred thirty-three thousand, five hundred fifty-six".