66228419437 has 8 divisors (see below), whose sum is σ = 69003747072. Its totient is φ = 63493024800.

The previous prime is 66228419401. The next prime is 66228419483. The reversal of 66228419437 is 73491482266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66228419437 - 2²⁷ = 66094201709 is a prime.

It is a super-2 number, since 2×66228419437² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66228479437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9979864 + ... + 9986497.

It is an arithmetic number, because the mean of its divisors is an integer number (8625468384).

Almost surely, 2^66228419437 is an apocalyptic number.

It is an amenable number.

66228419437 is a deficient number, since it is larger than the sum of its proper divisors (2775327635).

66228419437 is a wasteful number, since it uses less digits than its factorization.

66228419437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19966499.

The product of its digits is 3483648, while the sum is 52.

The spelling of 66228419437 in words is "sixty-six billion, two hundred twenty-eight million, four hundred nineteen thousand, four hundred thirty-seven".