5515666250445 has 36 divisors (see below), whose sum is σ = 10352481284340. Its totient is φ = 2715404919552.

The previous prime is 5515666250429. The next prime is 5515666250447. The reversal of 5515666250445 is 5440526665155.

It can be written as a sum of positive squares in 6 ways, for example, as 253239426441 + 5262426824004 = 503229^2 + 2293998^2 .

It is not a de Polignac number, because 5515666250445 - 2⁴ = 5515666250429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5515666250391 and 5515666250400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515666250447) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 362626600 + ... + 362641809.

It is an arithmetic number, because the mean of its divisors is an integer number (287568924565).

Almost surely, 2^{5515666250445} is an apocalyptic number.

It is an amenable number.

5515666250445 is a deficient number, since it is larger than the sum of its proper divisors (4836815033895).

5515666250445 is a wasteful number, since it uses less digits than its factorization.

5515666250445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725268446 (or 725268430 counting only the distinct ones).

The product of its (nonzero) digits is 21600000, while the sum is 54.

The spelling of 5515666250445 in words is "five trillion, five hundred fifteen billion, six hundred sixty-six million, two hundred fifty thousand, four hundred forty-five".