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10038668281 = 85911686459
BaseRepresentation
bin10010101100101100…
…11110101111111001
3221220121112012000221
421112112132233321
5131024344341111
64340043300041
7503524162315
oct112626365771
927817465027
1010038668281
114291626074
121b41b1a621
13c3ca08b05
146b334ab45
153db49a371
hex25659ebf9

10038668281 has 4 divisors (see below), whose sum is σ = 10050355600. Its totient is φ = 10026980964.

The previous prime is 10038668267. The next prime is 10038668303. The reversal of 10038668281 is 18286683001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18286683001 = 33915392711.

It is a cyclic number.

It is not a de Polignac number, because 10038668281 - 27 = 10038668153 is a prime.

It is a super-2 number, since 2×100386682812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10038668201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5842371 + ... + 5844088.

It is an arithmetic number, because the mean of its divisors is an integer number (2512588900).

Almost surely, 210038668281 is an apocalyptic number.

It is an amenable number.

10038668281 is a deficient number, since it is larger than the sum of its proper divisors (11687319).

10038668281 is an equidigital number, since it uses as much as digits as its factorization.

10038668281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11687318.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 10038668281 in words is "ten billion, thirty-eight million, six hundred sixty-eight thousand, two hundred eighty-one".

Divisors: 1 859 11686459 10038668281