66213617350 has 12 divisors (see below), whose sum is σ = 123157328364. Its totient is φ = 26485446920.

The previous prime is 66213617347. The next prime is 66213617363. The reversal of 66213617350 is 5371631266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 662136124 + ... + 662136223.

It is an arithmetic number, because the mean of its divisors is an integer number (10263110697).

Almost surely, 2^66213617350 is an apocalyptic number.

66213617350 is a deficient number, since it is larger than the sum of its proper divisors (56943711014).

66213617350 is a wasteful number, since it uses less digits than its factorization.

66213617350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324272359 (or 1324272354 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 66213617350 in words is "sixty-six billion, two hundred thirteen million, six hundred seventeen thousand, three hundred fifty".