50121215545 has 16 divisors (see below), whose sum is σ = 60433641360. Its totient is φ = 39905132544.

The previous prime is 50121215537. The next prime is 50121215563. The reversal of 50121215545 is 54551212105.

It can be written as a sum of positive squares in 8 ways, for example, as 12878391289 + 37242824256 = 113483^2 + 192984^2 .

It is a cyclic number.

It is not a de Polignac number, because 50121215545 - 2³ = 50121215537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1464691 + ... + 1498519.

It is an arithmetic number, because the mean of its divisors is an integer number (3777102585).

Almost surely, 2^50121215545 is an apocalyptic number.

It is an amenable number.

50121215545 is a deficient number, since it is larger than the sum of its proper divisors (10312425815).

50121215545 is a wasteful number, since it uses less digits than its factorization.

50121215545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35244.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 50121215545 in words is "fifty billion, one hundred twenty-one million, two hundred fifteen thousand, five hundred forty-five".