64552425546 has 64 divisors (see below), whose sum is σ = 151802477568. Its totient is φ = 17919335808.

The previous prime is 64552425541. The next prime is 64552425559.

64552425546 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64552425495 and 64552425504.

It is not an unprimeable number, because it can be changed into a prime (64552425541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48301 + ... + 362543.

It is an arithmetic number, because the mean of its divisors is an integer number (2371913712).

Almost surely, 2^64552425546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64552425546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75901238784).

64552425546 is an abundant number, since it is smaller than the sum of its proper divisors (87250052022).

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

64552425546 is a wasteful number, since it uses less digits than its factorization.

64552425546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314395.

The product of its digits is 5760000, while the sum is 48.

Adding to 64552425546 its product of digits (5760000), we get a palindrome (64558185546).

The spelling of 64552425546 in words is "sixty-four billion, five hundred fifty-two million, four hundred twenty-five thousand, five hundred forty-six".