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68670181601 = 746321187961
BaseRepresentation
bin111111111101000011…
…111101000011100001
320120020202001122222022
4333331003331003201
52111114031302401
651314024151225
74650465625040
oct777503750341
9216222048868
1068670181601
11271395888aa
1211385608515
136624a9c268
143476172557
151bbd9d071b
hexffd0fd0e1

68670181601 has 8 divisors (see below), whose sum is σ = 78649714944. Its totient is φ = 58733025120.

The previous prime is 68670181589. The next prime is 68670181607. The reversal of 68670181601 is 10618107686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-68670181601 is a prime.

It is a super-2 number, since 2×686701816012 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68670181607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10590740 + ... + 10597221.

It is an arithmetic number, because the mean of its divisors is an integer number (9831214368).

Almost surely, 268670181601 is an apocalyptic number.

It is an amenable number.

68670181601 is a deficient number, since it is larger than the sum of its proper divisors (9979533343).

68670181601 is a wasteful number, since it uses less digits than its factorization.

68670181601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21188431.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 68670181601 in words is "sixty-eight billion, six hundred seventy million, one hundred eighty-one thousand, six hundred one".

Divisors: 1 7 463 3241 21187961 148315727 9810025943 68670181601