2135455665 has 32 divisors (see below), whose sum is σ = 3928820736. Its totient is φ = 970211520.

The previous prime is 2135455649. The next prime is 2135455709. The reversal of 2135455665 is 5665545312.

It is not a de Polignac number, because 2135455665 - 2⁴ = 2135455649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45271 + ... + 79500.

It is an arithmetic number, because the mean of its divisors is an integer number (122775648).

Almost surely, 2^2135455665 is an apocalyptic number.

It is an amenable number.

2135455665 is a deficient number, since it is larger than the sum of its proper divisors (1793365071).

2135455665 is a wasteful number, since it uses less digits than its factorization.

2135455665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124949.

The product of its digits is 540000, while the sum is 42.

The square root of 2135455665 is about 46210.9907381350. The cubic root of 2135455665 is about 1287.7459314664.

The spelling of 2135455665 in words is "two billion, one hundred thirty-five million, four hundred fifty-five thousand, six hundred sixty-five".