66011954306 has 16 divisors (see below), whose sum is σ = 102437302968. Its totient is φ = 31882128000.

The previous prime is 66011954293. The next prime is 66011954321. The reversal of 66011954306 is 60345911066.

It can be written as a sum of positive squares in 4 ways, for example, as 40538198281 + 25473756025 = 201341^2 + 159605^2 .

It is a super-2 number, since 2×66011954306² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3976985 + ... + 3993548.

Almost surely, 2^66011954306 is an apocalyptic number.

66011954306 is a deficient number, since it is larger than the sum of its proper divisors (36425348662).

66011954306 is a wasteful number, since it uses less digits than its factorization.

66011954306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7970677.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 66011954306 in words is "sixty-six billion, eleven million, nine hundred fifty-four thousand, three hundred six".