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68367886625 = 535310319681
BaseRepresentation
bin111111101011000010…
…110010100100100001
320112110200020111020002
4333223002302210201
52110004134333000
651224025025345
74640135306423
oct775302624441
9215420214202
1068367886625
1126aa3987145
1211300325255
1365a72799ac
143447d62813
151ba21bb8d5
hexfeb0b2921

68367886625 has 16 divisors (see below), whose sum is σ = 86933001168. Its totient is φ = 53662336000.

The previous prime is 68367886571. The next prime is 68367886627. The reversal of 68367886625 is 52668876386.

68367886625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 18957709969 + 49410176656 = 137687^2 + 222284^2 .

It is not a de Polignac number, because 68367886625 - 212 = 68367882529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68367886627) 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, 5153216 + ... + 5166465.

It is an arithmetic number, because the mean of its divisors is an integer number (5433312573).

Almost surely, 268367886625 is an apocalyptic number.

It is an amenable number.

68367886625 is a deficient number, since it is larger than the sum of its proper divisors (18565114543).

68367886625 is a wasteful number, since it uses less digits than its factorization.

68367886625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10319749 (or 10319739 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 65.

The spelling of 68367886625 in words is "sixty-eight billion, three hundred sixty-seven million, eight hundred eighty-six thousand, six hundred twenty-five".

Divisors: 1 5 25 53 125 265 1325 6625 10319681 51598405 257992025 546943093 1289960125 2734715465 13673577325 68367886625