65428439827 has 2 divisors, whose sum is σ = 65428439828. Its totient is φ = 65428439826.

The previous prime is 65428439803. The next prime is 65428440001. The reversal of 65428439827 is 72893482456.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65428439827 is a prime.

It is not a weakly prime, because it can be changed into another prime (65428439627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32714219913 + 32714219914.

It is an arithmetic number, because the mean of its divisors is an integer number (32714219914).

Almost surely, 2^65428439827 is an apocalyptic number.

65428439827 is a deficient number, since it is larger than the sum of its proper divisors (1).

65428439827 is an equidigital number, since it uses as much as digits as its factorization.

65428439827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23224320, while the sum is 58.

The spelling of 65428439827 in words is "sixty-five billion, four hundred twenty-eight million, four hundred thirty-nine thousand, eight hundred twenty-seven".