53444490666 has 32 divisors (see below), whose sum is σ = 122220016128. Its totient is φ = 15262206960.

The previous prime is 53444490653. The next prime is 53444490691. The reversal of 53444490666 is 66609444435.

It is a super-2 number, since 2×53444490666² (a number of 22 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 233520 + ... + 401771.

It is an arithmetic number, because the mean of its divisors is an integer number (3819375504).

Almost surely, 2^53444490666 is an apocalyptic number.

53444490666 is an abundant number, since it is smaller than the sum of its proper divisors (68775525462).

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

53444490666 is a wasteful number, since it uses less digits than its factorization.

53444490666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637306.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 53444490666 in words is "fifty-three billion, four hundred forty-four million, four hundred ninety thousand, six hundred sixty-six".