65406282938 has 4 divisors (see below), whose sum is σ = 98109424410. Its totient is φ = 32703141468.

The previous prime is 65406282937. The next prime is 65406282947. The reversal of 65406282938 is 83928260456.

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., 65338005769 + 68277169 = 255613^2 + 8263^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65406282938.

It is not an unprimeable number, because it can be changed into a prime (65406282937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16351570733 + ... + 16351570736.

Almost surely, 2^65406282938 is an apocalyptic number.

65406282938 is a deficient number, since it is larger than the sum of its proper divisors (32703141472).

65406282938 is a wasteful number, since it uses less digits than its factorization.

65406282938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32703141471.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 65406282938 in words is "sixty-five billion, four hundred six million, two hundred eighty-two thousand, nine hundred thirty-eight".