2135576578 has 8 divisors (see below), whose sum is σ = 3203750268. Its totient is φ = 1067659824.

The previous prime is 2135576563. The next prime is 2135576587. The reversal of 2135576578 is 8756755312.

It can be written as a sum of positive squares in 2 ways, for example, as 2090592729 + 44983849 = 45723^2 + 6707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41901 + ... + 77632.

Almost surely, 2^2135576578 is an apocalyptic number.

2135576578 is a deficient number, since it is larger than the sum of its proper divisors (1068173690).

2135576578 is a wasteful number, since it uses less digits than its factorization.

2135576578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128468.

The product of its digits is 1764000, while the sum is 49.

The square root of 2135576578 is about 46212.2989906367. The cubic root of 2135576578 is about 1287.7702357695.

The spelling of 2135576578 in words is "two billion, one hundred thirty-five million, five hundred seventy-six thousand, five hundred seventy-eight".