66563150431 has 8 divisors (see below), whose sum is σ = 69678102528. Its totient is φ = 63508683000.

The previous prime is 66563150417. The next prime is 66563150441. The reversal of 66563150431 is 13405136566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66563150431 - 2²⁹ = 66026279519 is a prime.

It is a super-2 number, since 2×66563150431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66563150411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15118915 + ... + 15123316.

It is an arithmetic number, because the mean of its divisors is an integer number (8709762816).

Almost surely, 2^66563150431 is an apocalyptic number.

66563150431 is a deficient number, since it is larger than the sum of its proper divisors (3114952097).

66563150431 is a wasteful number, since it uses less digits than its factorization.

66563150431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30242333.

The product of its (nonzero) digits is 194400, while the sum is 40.

Adding to 66563150431 its reverse (13405136566), we get a palindrome (79968286997).

The spelling of 66563150431 in words is "sixty-six billion, five hundred sixty-three million, one hundred fifty thousand, four hundred thirty-one".