66531334355 has 16 divisors (see below), whose sum is σ = 80841309120. Its totient is φ = 52558860288.

The previous prime is 66531334343. The next prime is 66531334361. The reversal of 66531334355 is 55343313566.

It is a cyclic number.

It is not a de Polignac number, because 66531334355 - 2¹⁴ = 66531317971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190 + ... + 364779.

It is an arithmetic number, because the mean of its divisors is an integer number (5052581820).

Almost surely, 2^66531334355 is an apocalyptic number.

66531334355 is a deficient number, since it is larger than the sum of its proper divisors (14309974765).

66531334355 is a wasteful number, since it uses less digits than its factorization.

66531334355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366430.

The product of its digits is 1458000, while the sum is 44.

The spelling of 66531334355 in words is "sixty-six billion, five hundred thirty-one million, three hundred thirty-four thousand, three hundred fifty-five".