65537873556 has 24 divisors (see below), whose sum is σ = 155807021664. Its totient is φ = 21433769760.

The previous prime is 65537873551. The next prime is 65537873563.

65537873556 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 65537873556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65537873551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51522850 + ... + 51524121.

It is an arithmetic number, because the mean of its divisors is an integer number (6491959236).

Almost surely, 2^65537873556 is an apocalyptic number.

It is an amenable number.

65537873556 is an abundant number, since it is smaller than the sum of its proper divisors (90269148108).

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

65537873556 is a wasteful number, since it uses less digits than its factorization.

65537873556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103047031 (or 103047029 counting only the distinct ones).

The product of its digits is 79380000, while the sum is 60.

The spelling of 65537873556 in words is "sixty-five billion, five hundred thirty-seven million, eight hundred seventy-three thousand, five hundred fifty-six".