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15125550413 = 82091842557
BaseRepresentation
bin11100001011000110…
…11001010101001101
31110001010101120110212
432011203121111031
5221434120103123
610540521012205
71043553025421
oct160543312515
943033346425
1015125550413
116461a84996
122b21624065
13157086743c
14a36b86b81
155d7d64878
hex3858d954d

15125550413 has 4 divisors (see below), whose sum is σ = 15127401180. Its totient is φ = 15123699648.

The previous prime is 15125550367. The next prime is 15125550431. The reversal of 15125550413 is 31405552151.

15125550413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6763911049 + 8361639364 = 82243^2 + 91442^2 .

It is a cyclic number.

It is not a de Polignac number, because 15125550413 - 28 = 15125550157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15125550413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15125550493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913070 + ... + 929487.

It is an arithmetic number, because the mean of its divisors is an integer number (3781850295).

Almost surely, 215125550413 is an apocalyptic number.

It is an amenable number.

15125550413 is a deficient number, since it is larger than the sum of its proper divisors (1850767).

15125550413 is an equidigital number, since it uses as much as digits as its factorization.

15125550413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850766.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 15125550413 in words is "fifteen billion, one hundred twenty-five million, five hundred fifty thousand, four hundred thirteen".

Divisors: 1 8209 1842557 15125550413