4891266066 has 16 divisors (see below), whose sum is σ = 10207859904. Its totient is φ = 1559534064.

The previous prime is 4891266049. The next prime is 4891266073. The reversal of 4891266066 is 6606621984.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17721841 + ... + 17722116.

It is an arithmetic number, because the mean of its divisors is an integer number (637991244).

Almost surely, 2^4891266066 is an apocalyptic number.

4891266066 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

4891266066 is an abundant number, since it is smaller than the sum of its proper divisors (5316593838).

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

4891266066 is a wasteful number, since it uses less digits than its factorization.

4891266066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35443985.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 4891266066 is about 69937.5869329218. The cubic root of 4891266066 is about 1697.4894969356.

The spelling of 4891266066 in words is "four billion, eight hundred ninety-one million, two hundred sixty-six thousand, sixty-six".