66566754010 has 8 divisors (see below), whose sum is σ = 119820157236. Its totient is φ = 26626701600.

The previous prime is 66566753993. The next prime is 66566754017. The reversal of 66566754010 is 1045766566.

It can be written as a sum of positive squares in 2 ways, for example, as 66528400761 + 38353249 = 257931^2 + 6193^2 .

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

It is a super-2 number, since 2×66566754010² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66566754017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328337691 + ... + 3328337710.

Almost surely, 2^66566754010 is an apocalyptic number.

66566754010 is a deficient number, since it is larger than the sum of its proper divisors (53253403226).

66566754010 is a wasteful number, since it uses less digits than its factorization.

66566754010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6656675408.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 66566754010 in words is "sixty-six billion, five hundred sixty-six million, seven hundred fifty-four thousand, ten".