55061660506564 has 6 divisors (see below), whose sum is σ = 96357905886494. Its totient is φ = 27530830253280.

The previous prime is 55061660506561. The next prime is 55061660506583. The reversal of 55061660506564 is 46560506616055.

It can be written as a sum of positive squares in only one way, i.e., 52672873881664 + 2388786624900 = 7257608^2 + 1545570^2 .

It is a super-3 number, since 3×55061660506564³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55061660506561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6882707563317 + ... + 6882707563324.

Almost surely, 2^{55061660506564} is an apocalyptic number.

It is an amenable number.

55061660506564 is a deficient number, since it is larger than the sum of its proper divisors (41296245379930).

55061660506564 is a wasteful number, since it uses less digits than its factorization.

55061660506564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13765415126645 (or 13765415126643 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 55.

The spelling of 55061660506564 in words is "fifty-five trillion, sixty-one billion, six hundred sixty million, five hundred six thousand, five hundred sixty-four".