32779668538 has 4 divisors (see below), whose sum is σ = 49169502810. Its totient is φ = 16389834268.

The previous prime is 32779668529. The next prime is 32779668599. The reversal of 32779668538 is 83586697723.

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

It can be written as a sum of positive squares in only one way, i.e., 30711511009 + 2068157529 = 175247^2 + 45477^2 .

It is a super-2 number, since 2×32779668538² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32779668538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8194917133 + ... + 8194917136.

Almost surely, 2^32779668538 is an apocalyptic number.

32779668538 is a deficient number, since it is larger than the sum of its proper divisors (16389834272).

32779668538 is a wasteful number, since it uses less digits than its factorization.

32779668538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16389834271.

The product of its digits is 91445760, while the sum is 64.

The spelling of 32779668538 in words is "thirty-two billion, seven hundred seventy-nine million, six hundred sixty-eight thousand, five hundred thirty-eight".