66671004010 has 16 divisors (see below), whose sum is σ = 129239177256. Its totient is φ = 24616986048.

The previous prime is 66671003989. The next prime is 66671004011. The reversal of 66671004010 is 1040017666.

It can be written as a sum of positive squares in 4 ways, for example, as 17288831169 + 49382172841 = 131487^2 + 222221^2 .

It is not an unprimeable number, because it can be changed into a prime (66671004011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256426809 + ... + 256427068.

Almost surely, 2^66671004010 is an apocalyptic number.

66671004010 is a deficient number, since it is larger than the sum of its proper divisors (62568173246).

66671004010 is a wasteful number, since it uses less digits than its factorization.

66671004010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512853897.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 66671004010 in words is "sixty-six billion, six hundred seventy-one million, four thousand, ten".