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5145666049 = 6906174509
BaseRepresentation
bin1001100101011010…
…01010001000000001
3111021121110220211001
410302231022020001
541014242303144
62210333252001
7241341303556
oct46255121001
914247426731
105145666049
11220065a077
12bb7334001
136400a0c14
1436b57ca2d
15201b2bbd4
hex132b4a201

5145666049 has 4 divisors (see below), whose sum is σ = 5145809620. Its totient is φ = 5145522480.

The previous prime is 5145666017. The next prime is 5145666083. The reversal of 5145666049 is 9406665415.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 2078721649 + 3066944400 = 45593^2 + 55380^2 .

It is a cyclic number.

It is not a de Polignac number, because 5145666049 - 25 = 5145666017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5145666349) 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, 31807 + ... + 106315.

It is an arithmetic number, because the mean of its divisors is an integer number (1286452405).

Almost surely, 25145666049 is an apocalyptic number.

It is an amenable number.

5145666049 is a deficient number, since it is larger than the sum of its proper divisors (143571).

5145666049 is an equidigital number, since it uses as much as digits as its factorization.

5145666049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143570.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 5145666049 is about 71733.2980490929. The cubic root of 5145666049 is about 1726.4229439682.

The spelling of 5145666049 in words is "five billion, one hundred forty-five million, six hundred sixty-six thousand, forty-nine".

Divisors: 1 69061 74509 5145666049