65628341538 has 16 divisors (see below), whose sum is σ = 132200977440. Its totient is φ = 21718731456.

The previous prime is 65628341531. The next prime is 65628341563. The reversal of 65628341538 is 83514382656.

It is not an unprimeable number, because it can be changed into a prime (65628341531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39344695 + ... + 39346362.

It is an arithmetic number, because the mean of its divisors is an integer number (8262561090).

Almost surely, 2^65628341538 is an apocalyptic number.

65628341538 is an abundant number, since it is smaller than the sum of its proper divisors (66572635902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65628341538 is a wasteful number, since it uses less digits than its factorization.

65628341538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78691201.

The product of its digits is 4147200, while the sum is 51.

The spelling of 65628341538 in words is "sixty-five billion, six hundred twenty-eight million, three hundred forty-one thousand, five hundred thirty-eight".