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54123323413 = 291866321497
BaseRepresentation
bin110010011010000000…
…000110000000010101
312011200221120200222211
4302122000012000111
51341321032322123
640510334353421
73624140441545
oct623200060025
9164627520884
1054123323413
1120a54228a55
12a5a595b871
1351470acc73
1428961c7325
15161b87a40d
hexc9a006015

54123323413 has 4 divisors (see below), whose sum is σ = 55989644940. Its totient is φ = 52257001888.

The previous prime is 54123323357. The next prime is 54123323473. The reversal of 54123323413 is 31432332145.

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: 31432332145 = 56286466429.

It can be written as a sum of positive squares in 2 ways, for example, as 20618949649 + 33504373764 = 143593^2 + 183042^2 .

It is a cyclic number.

It is not a de Polignac number, because 54123323413 - 29 = 54123322901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54123323473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933160720 + ... + 933160777.

It is an arithmetic number, because the mean of its divisors is an integer number (13997411235).

Almost surely, 254123323413 is an apocalyptic number.

It is an amenable number.

54123323413 is a deficient number, since it is larger than the sum of its proper divisors (1866321527).

54123323413 is a wasteful number, since it uses less digits than its factorization.

54123323413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866321526.

The product of its digits is 25920, while the sum is 31.

Adding to 54123323413 its reverse (31432332145), we get a palindrome (85555655558).

The spelling of 54123323413 in words is "fifty-four billion, one hundred twenty-three million, three hundred twenty-three thousand, four hundred thirteen".

Divisors: 1 29 1866321497 54123323413