66109411753922 has 16 divisors (see below), whose sum is σ = 99602523842712. Its totient is φ = 32908644679680.

The previous prime is 66109411753909. The next prime is 66109411753949. The reversal of 66109411753922 is 22935711490166.

It can be written as a sum of positive squares in 4 ways, for example, as 50015602653241 + 16093809100681 = 7072171^2 + 4011709^2 .

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 7 ways as a sum of consecutive naturals, for example, 16767743 + ... + 20331650.

Almost surely, 2^{66109411753922} is an apocalyptic number.

66109411753922 is a deficient number, since it is larger than the sum of its proper divisors (33493112088790).

66109411753922 is a wasteful number, since it uses less digits than its factorization.

66109411753922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37103333.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 66109411753922 in words is "sixty-six trillion, one hundred nine billion, four hundred eleven million, seven hundred fifty-three thousand, nine hundred twenty-two".