55473637978066 has 64 divisors (see below), whose sum is σ = 103974512391936. Its totient is φ = 21564906854400.

The previous prime is 55473637978051. The next prime is 55473637978069. The reversal of 55473637978066 is 66087973637455.

It is a junction number, because it is equal to n+sod(n) for n = 55473637977983 and 55473637978001.

It is not an unprimeable number, because it can be changed into a prime (55473637978069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127876506 + ... + 128309578.

It is an arithmetic number, because the mean of its divisors is an integer number (1624601756124).

Almost surely, 2^{55473637978066} is an apocalyptic number.

55473637978066 is a deficient number, since it is larger than the sum of its proper divisors (48500874413870).

55473637978066 is a wasteful number, since it uses less digits than its factorization.

55473637978066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434947.

The product of its (nonzero) digits is 4800902400, while the sum is 76.

The spelling of 55473637978066 in words is "fifty-five trillion, four hundred seventy-three billion, six hundred thirty-seven million, nine hundred seventy-eight thousand, sixty-six".