66476377770 has 32 divisors (see below), whose sum is σ = 174047244480. Its totient is φ = 16115485440.

The previous prime is 66476377741. The next prime is 66476377819. The reversal of 66476377770 is 7777367466.

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 15 ways as a sum of consecutive naturals, for example, 100721455 + ... + 100722114.

It is an arithmetic number, because the mean of its divisors is an integer number (5438976390).

Almost surely, 2^66476377770 is an apocalyptic number.

66476377770 is an abundant number, since it is smaller than the sum of its proper divisors (107570866710).

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

66476377770 is a wasteful number, since it uses less digits than its factorization.

66476377770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201443590.

The product of its (nonzero) digits is 43563744, while the sum is 60.

The spelling of 66476377770 in words is "sixty-six billion, four hundred seventy-six million, three hundred seventy-seven thousand, seven hundred seventy".