64172427097 has 8 divisors (see below), whose sum is σ = 67566886560. Its totient is φ = 60779664000.

The previous prime is 64172427089. The next prime is 64172427113. The reversal of 64172427097 is 79072427146.

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 64172427097 - 2³ = 64172427089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64172427097.

It is not an unprimeable number, because it can be changed into a prime (64172427017) 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, 346063 + ... + 498100.

It is an arithmetic number, because the mean of its divisors is an integer number (8445860820).

Almost surely, 2^64172427097 is an apocalyptic number.

It is an amenable number.

64172427097 is a deficient number, since it is larger than the sum of its proper divisors (3394459463).

64172427097 is a wasteful number, since it uses less digits than its factorization.

64172427097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848183.

The product of its (nonzero) digits is 1185408, while the sum is 49.

Adding to 64172427097 its sum of digits (49), we get a palindrome (64172427146).

The spelling of 64172427097 in words is "sixty-four billion, one hundred seventy-two million, four hundred twenty-seven thousand, ninety-seven".