32664778193 has 4 divisors (see below), whose sum is σ = 32665902948. Its totient is φ = 32663653440.

The previous prime is 32664778189. The next prime is 32664778217. The reversal of 32664778193 is 39187746623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39187746623 = 1367 ⋅28666969.

It can be written as a sum of positive squares in 2 ways, for example, as 4687867024 + 27976911169 = 68468^2 + 167263^2 .

It is a cyclic number.

It is not a de Polignac number, because 32664778193 - 2² = 32664778189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32664778183) 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, 517628 + ... + 577293.

It is an arithmetic number, because the mean of its divisors is an integer number (8166475737).

Almost surely, 2^32664778193 is an apocalyptic number.

It is an amenable number.

32664778193 is a deficient number, since it is larger than the sum of its proper divisors (1124755).

32664778193 is a wasteful number, since it uses less digits than its factorization.

32664778193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124754.

The product of its digits is 9144576, while the sum is 56.

The spelling of 32664778193 in words is "thirty-two billion, six hundred sixty-four million, seven hundred seventy-eight thousand, one hundred ninety-three".