66456165532 has 6 divisors (see below), whose sum is σ = 116298289688. Its totient is φ = 33228082764.

The previous prime is 66456165527. The next prime is 66456165539. The reversal of 66456165532 is 23556165466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66456165539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8307020688 + ... + 8307020695.

Almost surely, 2^66456165532 is an apocalyptic number.

It is an amenable number.

66456165532 is a deficient number, since it is larger than the sum of its proper divisors (49842124156).

66456165532 is a wasteful number, since it uses less digits than its factorization.

66456165532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16614041387 (or 16614041385 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 49.

The spelling of 66456165532 in words is "sixty-six billion, four hundred fifty-six million, one hundred sixty-five thousand, five hundred thirty-two".