66224377376 has 24 divisors (see below), whose sum is σ = 130393347084. Its totient is φ = 33108606720.

The previous prime is 66224377363. The next prime is 66224377423. The reversal of 66224377376 is 67377342266.

It can be written as a sum of positive squares in 2 ways, for example, as 42098832400 + 24125544976 = 205180^2 + 155324^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 202046 + ... + 416258.

Almost surely, 2^66224377376 is an apocalyptic number.

It is an amenable number.

66224377376 is a deficient number, since it is larger than the sum of its proper divisors (64168969708).

66224377376 is a wasteful number, since it uses less digits than its factorization.

66224377376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223884 (or 223876 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 53.

The spelling of 66224377376 in words is "sixty-six billion, two hundred twenty-four million, three hundred seventy-seven thousand, three hundred seventy-six".