66224500054 has 4 divisors (see below), whose sum is σ = 99336750084. Its totient is φ = 33112250026.

The previous prime is 66224499977. The next prime is 66224500081. The reversal of 66224500054 is 45000542266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45000542266 = 2 ⋅22500271133.

It is a junction number, because it is equal to n+sod(n) for n = 66224499992 and 66224500019.

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, 16556125012 + ... + 16556125015.

It is an arithmetic number, because the mean of its divisors is an integer number (24834187521).

Almost surely, 2^66224500054 is an apocalyptic number.

66224500054 is a deficient number, since it is larger than the sum of its proper divisors (33112250030).

66224500054 is a wasteful number, since it uses less digits than its factorization.

66224500054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33112250029.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 66224500054 in words is "sixty-six billion, two hundred twenty-four million, five hundred thousand, fifty-four".