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12794051431 = 71827721633
BaseRepresentation
bin10111110101001010…
…11011101101100111
31020000122021011010201
423322211123231213
5202200234121211
65513312531331
7632022433330
oct137245335547
936018234121
1012794051431
1154759aa227
122590850b47
13128b813c45
14895279287
154ed3200c1
hex2fa95bb67

12794051431 has 4 divisors (see below), whose sum is σ = 14621773072. Its totient is φ = 10966329792.

The previous prime is 12794051429. The next prime is 12794051453. The reversal of 12794051431 is 13415049721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13415049721 = 38934485989.

It is a cyclic number.

It is not a de Polignac number, because 12794051431 - 21 = 12794051429 is a prime.

It is a super-2 number, since 2×127940514312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12794052431) 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, 913860810 + ... + 913860823.

It is an arithmetic number, because the mean of its divisors is an integer number (3655443268).

Almost surely, 212794051431 is an apocalyptic number.

12794051431 is a deficient number, since it is larger than the sum of its proper divisors (1827721641).

12794051431 is an equidigital number, since it uses as much as digits as its factorization.

12794051431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827721640.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 12794051431 in words is "twelve billion, seven hundred ninety-four million, fifty-one thousand, four hundred thirty-one".

Divisors: 1 7 1827721633 12794051431