64536343400 has 96 divisors (see below), whose sum is σ = 151340581440. Its totient is φ = 25592501760.

The previous prime is 64536343387. The next prime is 64536343441. The reversal of 64536343400 is 434363546.

64536343400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37454939 + ... + 37456661.

It is an arithmetic number, because the mean of its divisors is an integer number (1576464390).

Almost surely, 2^64536343400 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 64536343400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75670290720).

64536343400 is an abundant number, since it is smaller than the sum of its proper divisors (86804238040).

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

64536343400 is a wasteful number, since it uses less digits than its factorization.

64536343400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 38.

The spelling of 64536343400 in words is "sixty-four billion, five hundred thirty-six million, three hundred forty-three thousand, four hundred".