66386733768290 has 64 divisors (see below), whose sum is σ = 136701858674304. Its totient is φ = 22994993691648.

The previous prime is 66386733768227. The next prime is 66386733768317. The reversal of 66386733768290 is 9286733768366.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48245384 + ... + 49602323.

It is an arithmetic number, because the mean of its divisors is an integer number (2135966541786).

Almost surely, 2^{66386733768290} is an apocalyptic number.

66386733768290 is an abundant number, since it is smaller than the sum of its proper divisors (70315124906014).

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

66386733768290 is a wasteful number, since it uses less digits than its factorization.

66386733768290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97848051.

The product of its (nonzero) digits is 1975228416, while the sum is 74.

The spelling of 66386733768290 in words is "sixty-six trillion, three hundred eighty-six billion, seven hundred thirty-three million, seven hundred sixty-eight thousand, two hundred ninety".