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12722992801 = 37193421079
BaseRepresentation
bin10111101100101100…
…10111011010100001
31012211200120000000121
423312112113122201
5202024041232201
65502253520241
7630200440321
oct136626273241
935750500017
1012722992801
115439885892
122570aa3081
131279b9460c
14889a5d281
154e6e859a1
hex2f65976a1

12722992801 has 4 divisors (see below), whose sum is σ = 12726417600. Its totient is φ = 12719568004.

The previous prime is 12722992783. The next prime is 12722992811. The reversal of 12722992801 is 10829922721.

It is a happy number.

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: 10829922721 = 15359705119.

It is a cyclic number.

It is not a de Polignac number, because 12722992801 - 25 = 12722992769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722992811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706821 + ... + 1714258.

It is an arithmetic number, because the mean of its divisors is an integer number (3181604400).

Almost surely, 212722992801 is an apocalyptic number.

It is an amenable number.

12722992801 is a deficient number, since it is larger than the sum of its proper divisors (3424799).

12722992801 is an equidigital number, since it uses as much as digits as its factorization.

12722992801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424798.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 12722992801 in words is "twelve billion, seven hundred twenty-two million, nine hundred ninety-two thousand, eight hundred one".

Divisors: 1 3719 3421079 12722992801