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38275484561 = 174821218941
BaseRepresentation
bin100011101001011001…
…011000101110010001
310122210111002002001022
4203221121120232101
51111342011001221
625330012245225
72523334151666
oct435131305621
9118714062038
1038275484561
1115261571076
127502470815
1337bca01522
141bd1543a6d
15ee03de4ab
hex8e9658b91

38275484561 has 4 divisors (see below), whose sum is σ = 38275878324. Its totient is φ = 38275090800.

The previous prime is 38275484551. The next prime is 38275484567. The reversal of 38275484561 is 16548457283.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16548457283 = 137120791659.

It can be written as a sum of positive squares in 2 ways, for example, as 238393600 + 38037090961 = 15440^2 + 195031^2 .

It is a cyclic number.

It is not a de Polignac number, because 38275484561 - 210 = 38275483537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38275484567) 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, 65351 + ... + 284291.

It is an arithmetic number, because the mean of its divisors is an integer number (9568969581).

Almost surely, 238275484561 is an apocalyptic number.

It is an amenable number.

38275484561 is a deficient number, since it is larger than the sum of its proper divisors (393763).

38275484561 is a wasteful number, since it uses less digits than its factorization.

38275484561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393762.

The product of its digits is 6451200, while the sum is 53.

The spelling of 38275484561 in words is "thirty-eight billion, two hundred seventy-five million, four hundred eighty-four thousand, five hundred sixty-one".

Divisors: 1 174821 218941 38275484561