66148903766 has 32 divisors (see below), whose sum is σ = 109111242240. Its totient is φ = 29827044000.

The previous prime is 66148903763. The next prime is 66148903781. The reversal of 66148903766 is 66730984166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66148903763) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4049816 + ... + 4066116.

It is an arithmetic number, because the mean of its divisors is an integer number (3409726320).

Almost surely, 2^66148903766 is an apocalyptic number.

66148903766 is a deficient number, since it is larger than the sum of its proper divisors (42962338474).

66148903766 is a wasteful number, since it uses less digits than its factorization.

66148903766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17780.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 66148903766 in words is "sixty-six billion, one hundred forty-eight million, nine hundred three thousand, seven hundred sixty-six".