65428179139 has 4 divisors (see below), whose sum is σ = 65428727256. Its totient is φ = 65427631024.

The previous prime is 65428179107. The next prime is 65428179149. The reversal of 65428179139 is 93197182456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65428179139 - 2⁵ = 65428179107 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 65428179139.

It is not an unprimeable number, because it can be changed into a prime (65428179149) 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, 10549 + ... + 361894.

It is an arithmetic number, because the mean of its divisors is an integer number (16357181814).

Almost surely, 2^65428179139 is an apocalyptic number.

65428179139 is a deficient number, since it is larger than the sum of its proper divisors (548117).

65428179139 is a wasteful number, since it uses less digits than its factorization.

65428179139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548116.

The product of its digits is 3265920, while the sum is 55.

The spelling of 65428179139 in words is "sixty-five billion, four hundred twenty-eight million, one hundred seventy-nine thousand, one hundred thirty-nine".