55066155656 has 32 divisors (see below), whose sum is σ = 104610200760. Its totient is φ = 27172196352.

The previous prime is 55066155607. The next prime is 55066155667. The reversal of 55066155656 is 65655166055.

It can be written as a sum of positive squares in 4 ways, for example, as 7441822756 + 47624332900 = 86266^2 + 218230^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79916 + ... + 341348.

Almost surely, 2^55066155656 is an apocalyptic number.

It is an amenable number.

55066155656 is a deficient number, since it is larger than the sum of its proper divisors (49544045104).

55066155656 is a wasteful number, since it uses less digits than its factorization.

55066155656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261785 (or 261781 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 55066155656 in words is "fifty-five billion, sixty-six million, one hundred fifty-five thousand, six hundred fifty-six".