64134445160 has 64 divisors (see below), whose sum is σ = 148143098880. Its totient is φ = 24973724160.

The previous prime is 64134445069. The next prime is 64134445169. The reversal of 64134445160 is 6154443146.

It is a super-2 number, since 2×64134445160² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64134445169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717089 + ... + 801551.

It is an arithmetic number, because the mean of its divisors is an integer number (2314735920).

Almost surely, 2^64134445160 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 64134445160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74071549440).

64134445160 is an abundant number, since it is smaller than the sum of its proper divisors (84008653720).

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

64134445160 is a wasteful number, since it uses less digits than its factorization.

64134445160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84978 (or 84974 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 64134445160 in words is "sixty-four billion, one hundred thirty-four million, four hundred forty-five thousand, one hundred sixty".