1535551042145 has 4 divisors (see below), whose sum is σ = 1842661250580. Its totient is φ = 1228440833712.

The previous prime is 1535551042139. The next prime is 1535551042253. The reversal of 1535551042145 is 5412401555351.

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 979331910544 + 556219131601 = 989612^2 + 745801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1535551042145 - 2¹⁴ = 1535551025761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153555104210 + ... + 153555104219.

It is an arithmetic number, because the mean of its divisors is an integer number (460665312645).

Almost surely, 2^{1535551042145} is an apocalyptic number.

It is an amenable number.

1535551042145 is a deficient number, since it is larger than the sum of its proper divisors (307110208435).

1535551042145 is an equidigital number, since it uses as much as digits as its factorization.

1535551042145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307110208434.

The product of its (nonzero) digits is 300000, while the sum is 41.

Adding to 1535551042145 its reverse (5412401555351), we get a palindrome (6947952597496).

The spelling of 1535551042145 in words is "one trillion, five hundred thirty-five billion, five hundred fifty-one million, forty-two thousand, one hundred forty-five".