66752669007 has 12 divisors (see below), whose sum is σ = 96431726664. Its totient is φ = 44496607920.

The previous prime is 66752669003. The next prime is 66752669059. The reversal of 66752669007 is 70096625766.

It is not a de Polignac number, because 66752669007 - 2² = 66752669003 is a prime.

It is a super-3 number, since 3×66752669007³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66752669003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348369 + ... + 504842.

It is an arithmetic number, because the mean of its divisors is an integer number (8035977222).

Almost surely, 2^66752669007 is an apocalyptic number.

66752669007 is a deficient number, since it is larger than the sum of its proper divisors (29679057657).

66752669007 is a wasteful number, since it uses less digits than its factorization.

66752669007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861910 (or 861907 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 66752669007 in words is "sixty-six billion, seven hundred fifty-two million, six hundred sixty-nine thousand, seven".