64841591562 has 96 divisors (see below), whose sum is σ = 143526518016. Its totient is φ = 19514183040.

The previous prime is 64841591561. The next prime is 64841591603. The reversal of 64841591562 is 26519514846.

It is not an unprimeable number, because it can be changed into a prime (64841591561) 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 47 ways as a sum of consecutive naturals, for example, 105777168 + ... + 105777780.

It is an arithmetic number, because the mean of its divisors is an integer number (1495067896).

Almost surely, 2^64841591562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64841591562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71763259008).

64841591562 is an abundant number, since it is smaller than the sum of its proper divisors (78684926454).

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

64841591562 is a wasteful number, since it uses less digits than its factorization.

64841591562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1393 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 51.

The spelling of 64841591562 in words is "sixty-four billion, eight hundred forty-one million, five hundred ninety-one thousand, five hundred sixty-two".