66527072512 has 18 divisors (see below), whose sum is σ = 132794274158. Its totient is φ = 33263536128.

The previous prime is 66527072509. The next prime is 66527072551. The reversal of 66527072512 is 21527072566.

It can be written as a sum of positive squares in only one way, i.e., 65241419776 + 1285652736 = 255424^2 + 35856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129935433 + ... + 129935944.

Almost surely, 2^66527072512 is an apocalyptic number.

It is an amenable number.

66527072512 is a deficient number, since it is larger than the sum of its proper divisors (66267201646).

66527072512 is an equidigital number, since it uses as much as digits as its factorization.

66527072512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259871393 (or 259871379 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 66527072512 in words is "sixty-six billion, five hundred twenty-seven million, seventy-two thousand, five hundred twelve".