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65000000000 = 2951013
BaseRepresentation
bin111100100010010011…
…010100101000000000
320012202221222010022102
4330202103110220000
52031110000000000
645505515325532
74460521612115
oct744223245000
9205687863272
1065000000000
1125625895071
12107204508a8
13618b5b8a80
14320895490c
151a566a93d5
hexf224d4a00

65000000000 has 220 divisors, whose sum is σ = 174829097982. Its totient is φ = 24000000000.

The previous prime is 64999999927. The next prime is 65000000017. The reversal of 65000000000 is 56.

It can be written as a sum of positive squares in 11 ways, for example, as 4735641856 + 60264358144 = 68816^2 + 245488^2 .

It is a sliding number, since 65000000000 = 25000000000 + 40000000000 and 1/25000000000 + 1/40000000000 = 0.000000000065000000000.

It is a hoax number, since the sum of its digits (11) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 4999999994 + ... + 5000000006.

Almost surely, 265000000000 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 65000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87414548991).

65000000000 is an abundant number, since it is smaller than the sum of its proper divisors (109829097982).

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

65000000000 is an frugal number, since it uses more digits than its factorization.

65000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

Adding to 65000000000 its reverse (56), we get a palindrome (65000000056).

The spelling of 65000000000 in words is "sixty-five billion", and thus it is an aban number and an uban number.