66201415733 has 4 divisors (see below), whose sum is σ = 66224902560. Its totient is φ = 66177928908.

The previous prime is 66201415727. The next prime is 66201415751. The reversal of 66201415733 is 33751410266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66201415733 - 2¹⁸ = 66201153589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66201415723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11739185 + ... + 11744822.

It is an arithmetic number, because the mean of its divisors is an integer number (16556225640).

Almost surely, 2^66201415733 is an apocalyptic number.

It is an amenable number.

66201415733 is a deficient number, since it is larger than the sum of its proper divisors (23486827).

66201415733 is a wasteful number, since it uses less digits than its factorization.

66201415733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23486826.

The product of its (nonzero) digits is 90720, while the sum is 38.

Adding to 66201415733 its reverse (33751410266), we get a palindrome (99952825999).

The spelling of 66201415733 in words is "sixty-six billion, two hundred one million, four hundred fifteen thousand, seven hundred thirty-three".