66305788750366 has 64 divisors (see below), whose sum is σ = 109789925769216. Its totient is φ = 29781795456000.

The previous prime is 66305788750363. The next prime is 66305788750367.

66305788750366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66305788750295 and 66305788750304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66305788750361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3888209896 + ... + 3888226948.

It is an arithmetic number, because the mean of its divisors is an integer number (1715467590144).

Almost surely, 2^{66305788750366} is an apocalyptic number.

66305788750366 is a deficient number, since it is larger than the sum of its proper divisors (43484137018850).

66305788750366 is a wasteful number, since it uses less digits than its factorization.

66305788750366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19897.

The product of its (nonzero) digits is 914457600, while the sum is 70.

The spelling of 66305788750366 in words is "sixty-six trillion, three hundred five billion, seven hundred eighty-eight million, seven hundred fifty thousand, three hundred sixty-six".