66165600010210 has 8 divisors (see below), whose sum is σ = 119098080018396. Its totient is φ = 26466240004080.

The previous prime is 66165600010073. The next prime is 66165600010231. The reversal of 66165600010210 is 1201000656166.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57790115124361 + 8375484885849 = 7601981^2 + 2894043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66165600010210² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3308280000501 + ... + 3308280000520.

Almost surely, 2^{66165600010210} is an apocalyptic number.

66165600010210 is a deficient number, since it is larger than the sum of its proper divisors (52932480008186).

66165600010210 is a wasteful number, since it uses less digits than its factorization.

66165600010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616560001028.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 66165600010210 its reverse (1201000656166), we get a palindrome (67366600666376).

The spelling of 66165600010210 in words is "sixty-six trillion, one hundred sixty-five billion, six hundred million, ten thousand, two hundred ten".