32178506489 has 4 divisors (see below), whose sum is σ = 32190730356. Its totient is φ = 32166282624.

The previous prime is 32178506473. The next prime is 32178506551. The reversal of 32178506489 is 98460587123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8315980864 + 23862525625 = 91192^2 + 154475^2 .

It is a cyclic number.

It is not a de Polignac number, because 32178506489 - 2⁴ = 32178506473 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 32178506489.

It is not an unprimeable number, because it can be changed into a prime (32178506429) 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, 6107984 + ... + 6113249.

It is an arithmetic number, because the mean of its divisors is an integer number (8047682589).

It is a 2-persistent number, because it is pandigital, and so is 2⋅32178506489 = 64357012978, but 3⋅32178506489 = 96535519467 is not.

Almost surely, 2^32178506489 is an apocalyptic number.

It is an amenable number.

32178506489 is a deficient number, since it is larger than the sum of its proper divisors (12223867).

32178506489 is a wasteful number, since it uses less digits than its factorization.

32178506489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12223866.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 32178506489 in words is "thirty-two billion, one hundred seventy-eight million, five hundred six thousand, four hundred eighty-nine".