55511129664 has 63 divisors (see below), whose sum is σ = 159128839857. Its totient is φ = 18501825024.

The previous prime is 55511129623. The next prime is 55511129677. The reversal of 55511129664 is 46692111555.

The square root of 55511129664 is 235608.

It is a perfect power (a square), and thus also a powerful number.

55511129664 is a `hidden beast` number, since 5 + 5 + 511 + 129 + 6 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55149825600 + 361304064 = 234840^2 + 19008^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5649684 + ... + 5659500.

Almost surely, 2^55511129664 is an apocalyptic number.

55511129664 is the 235608-th square number.

It is an amenable number.

55511129664 is an abundant number, since it is smaller than the sum of its proper divisors (103617710193).

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

55511129664 is an frugal number, since it uses more digits than its factorization.

55511129664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19652 (or 9822 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The spelling of 55511129664 in words is "fifty-five billion, five hundred eleven million, one hundred twenty-nine thousand, six hundred sixty-four".