64510165060 has 144 divisors (see below), whose sum is σ = 153168790320. Its totient is φ = 22791577600.

The previous prime is 64510165051. The next prime is 64510165061. The reversal of 64510165060 is 6056101546.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5807659264 + 58702505796 = 76208^2 + 242286^2 .

It is a super-2 number, since 2×64510165060² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64510165061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26688972 + ... + 26691388.

It is an arithmetic number, because the mean of its divisors is an integer number (1063672155).

Almost surely, 2^64510165060 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 64510165060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76584395160).

64510165060 is an abundant number, since it is smaller than the sum of its proper divisors (88658625260).

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

64510165060 is a wasteful number, since it uses less digits than its factorization.

64510165060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 64510165060 in words is "sixty-four billion, five hundred ten million, one hundred sixty-five thousand, sixty".