64352599556 has 96 divisors (see below), whose sum is σ = 137015961600. Its totient is φ = 25833427200.

The previous prime is 64352599547. The next prime is 64352599607. The reversal of 64352599556 is 65599525346.

It is a super-2 number, since 2×64352599556² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64352599495 and 64352599504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18233600 + ... + 18237128.

It is an arithmetic number, because the mean of its divisors is an integer number (1427249600).

Almost surely, 2^64352599556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64352599556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68507980800).

64352599556 is an abundant number, since it is smaller than the sum of its proper divisors (72663362044).

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

64352599556 is a wasteful number, since it uses less digits than its factorization.

64352599556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937 (or 3935 counting only the distinct ones).

The product of its digits is 43740000, while the sum is 59.

The spelling of 64352599556 in words is "sixty-four billion, three hundred fifty-two million, five hundred ninety-nine thousand, five hundred fifty-six".