66252430431 has 24 divisors (see below), whose sum is σ = 104658175440. Its totient is φ = 40052832000.

The previous prime is 66252430427. The next prime is 66252430441. The reversal of 66252430431 is 13403425266.

66252430431 is a `hidden beast` number, since 6 + 62 + 524 + 30 + 43 + 1 = 666.

It is not a de Polignac number, because 66252430431 - 2² = 66252430427 is a prime.

It is a super-2 number, since 2×66252430431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66252430411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794736 + ... + 874133.

It is an arithmetic number, because the mean of its divisors is an integer number (4360757310).

Almost surely, 2^66252430431 is an apocalyptic number.

66252430431 is a deficient number, since it is larger than the sum of its proper divisors (38405745009).

66252430431 is a wasteful number, since it uses less digits than its factorization.

66252430431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669287 (or 1669284 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 66252430431 its reverse (13403425266), we get a palindrome (79655855697).

The spelling of 66252430431 in words is "sixty-six billion, two hundred fifty-two million, four hundred thirty thousand, four hundred thirty-one".